CN201991991U

CN201991991U - Fluid damper

Info

Publication number: CN201991991U
Application number: CN2011200750688U
Authority: CN
Inventors: 韩玉林; 万江; 刘娟; 关庆港; 贾春; 王芳; 张居锁; 宋佰涵
Original assignee: Southeast University
Current assignee: Southeast University
Priority date: 2011-03-21
Filing date: 2011-03-21
Publication date: 2011-09-28
Anticipated expiration: 2021-03-21

Abstract

The utility model relates to a fluid damper, which comprises an upper portion and a lower portion, wherein the upper portion and the lower portion are independent to each other. The upper portion of the fluid damper comprises an upper disk flange, a first permanent magnet block and a first lock block, and the first permanent magnet block is fixed inside the upper disk flange through the first lock block. The lower portion of the fluid damper comprises a disk, a lower disk flange arranged opposite to the disk and a hydraulic cylinder in a non-leak connection with the disk and the lower disk flange, and the lower disk flange, the disk and the hydraulic cylinder form a non-leak closed space. A piston inside the damper is pushed to move by magnetic force and a spring, when the piston moves, damping fluid flows through a small circular through hole and consumes energy, thereby being capable of controlling shocks.

Description

Fluid damper

Technical field

The utility model proposes a kind of fluid damper, belong to the technical field of structural vibration control.

Background technique

Fluid damper is a kind of effective structural damping device, but in the fluid damper working procedure, exists the possibility of fluid damper inner fluid seepage, and therefore in the occasion that does not allow leakage, the use of fluid damper just is restricted.The utility model proposes a kind of fluid damper, this damper is difficult for taking place the leakage fault.

The model utility content

Technical problem: the purpose of this utility model is by createing a kind of no leak fluid damper, is specially adapted to not allow the structural vibration control under the leakage condition.

Technological scheme: the utility model provides a kind of fluid damper, this fluid damper comprises separate two-part up and down, this fluid damper top comprises: top disc flange, first permanent magnetic iron block, first briquetting, and first permanent magnetic iron block is fixed in the disc flange of top by first briquetting;

This fluid damper bottom comprises: disk, the lower disk flange that is oppositely arranged with disk, disk and lower disk flange do not had leak the oil hydraulic cylinder that is connected, lower disk flange, disk and oil hydraulic cylinder are formed closed no leakage space, and damp liquid is full of this closed no leakage space;

This fluid damper bottom also comprises piston, circular shaft, first spring, second spring, second permanent magnetic iron block, second briquetting, circle centre position at piston is provided with circular hole, circular shaft passes the circular hole of piston, the circular shaft lower end surface does not have leakage with lower disk flange upper surface and is connected, and the upper-end surface of circular shaft flushes with the outer surface of disk and do not have to leak and is connected; Piston is along the oil hydraulic cylinder axial motion, piston places the middle part of oil hydraulic cylinder by first spring and second spring, wherein the lower end of first spring is connected with piston upper surface, the upper end of first spring is connected with the top of circular shaft, one end of second spring is connected with the piston lower surface, and the other end of second spring is connected bottom with circular shaft; Second permanent magnetic iron block is fixed in the piston by second briquetting, has little round tube hole on the piston, and the line of action of making a concerted effort of the damping force that produces when damp liquid flows through the roundlet through hole and the dead in line of circular shaft.

Preferably, the shape of the shape of the shape of the shape of first permanent magnetic iron block, first briquetting, second permanent magnetic iron block and second briquetting is ring or column.

Preferably, the thickness that the distance of the upper-end surface of circular shaft is a disk is left in the upper end of first spring.

Preferably, the dead in line of the axis of the axis of the axis of the axis of top disc flange, disk, oil hydraulic cylinder, piston and circular shaft; First spring is to the effect line of action of force of piston and the dead in line of piston; Second spring is to the effect line of action of force of piston and the dead in line of piston; The line of action of making a concerted effort of the suffered magnetic force of first permanent magnetic iron block and the dead in line of circular shaft; The line of action of making a concerted effort of the suffered magnetic force of second permanent magnetic iron block and the dead in line of circular shaft.

Beneficial effect: oil hydraulic cylinder, lower disk flange, disk are formed does not have the confined space of leakage, piston is promoted to move along circular shaft in this confined space by magnetic force and spring, when piston motion, damp liquid flows through the little round tube hole on the piston, damp liquid consumes energy when flowing through roundlet through hole on the piston, plays the effect that suppresses vibration.Because piston does not only move in having the confined space of leakage, and does not use motive sealing, the phenomenon of leakage of general fluid damper in the vibration control process can not appear in this fluid damper.

Description of drawings

Fig. 1 be fluid damper face the sectional structure schematic representation;

Fig. 2 is the worm's eye view that the top disc flange 1 of the first ring permanent magnetic iron block 11 is installed among Fig. 1;

Fig. 3 is that the A-A of Fig. 2 middle and upper part disc flange 1 is to the sectional structure schematic representation;

Fig. 4 is the plan view that the piston 18 of the second ring permanent magnetic iron block 21 is installed among Fig. 1;

Fig. 5 is that the B-B of piston 18 among Fig. 4 is to the sectional structure schematic representation;

Fig. 6 is the structural representation of a T shape annular groove 30 among Fig. 3;

Fig. 7 is the structural representation of the 2nd T shape annular groove 31 among Fig. 5;

Fig. 8 is the worm's eye view that the top disc flange 1 of the first column permanent magnetic iron block 36 is installed among Fig. 1;

Fig. 9 is the structural representation of a T shape cylindrical slot 40 of the top disc flange 1 among Fig. 8;

Figure 10 is that the C-C of Fig. 8 middle and upper part disc flange 1 is to the sectional structure schematic representation;

Figure 11 is the sectional structure schematic representation after the top disc flange 1 of Fig. 8 is adopted on fluid damper top;

Figure 12 is the plan view that the piston 18 of the second column permanent magnetic iron block 43 is installed among Fig. 1;

Figure 13 is the structural representation of the 2nd T shape cylindrical slot 47 of the piston 18 among Figure 12;

Figure 14 is that the D-D of the piston 18 among Figure 12 is to the sectional structure schematic representation;

Figure 15 is equipped with the D-D of piston 18 of the second cylindricality permanent magnetic iron block 43 to the sectional structure schematic representation;

Have among the above figure: top disc flange 1, first bolt hole 2, first outside bolt 3, first outside unthreaded hole 4, the first ring briquetting 5, the first inboard unthreaded hole, 6, the first inside thread holes 7, circular shaft 8, first coil component spring 9, first inboard bolt 10, the first ring permanent magnetic iron blocks, 11, the first outside screw holes 12, disk 13, oil hydraulic cylinder 14, damp liquid 15, the second ring briquettings 16, second outside bolt 17, piston 18, the second outside unthreaded holes 19, the second outside screw holes 20, the second ring permanent magnetic iron block 21, the second inside thread hole, 22, the second bolts hole 23, lower disk flange 24, second coil component spring 25, the second inboard unthreaded hole 26, roundlet through hole 27, the second inboard bolts 28, circular hole 29, the bigger annular groove 32 of lower width of the one T shape annular groove 30, the two T shape annular grooves 31, the one T shape annular grooves 30, the annular groove 33 that the upper width of the one T shape annular groove 30 is less, the less annular groove 35 of lower width of annular groove 34, the two T shape annular grooves 31 that the upper width of the 2nd T shape annular groove 31 is bigger

The first column permanent magnetic iron block 36, the first column briquetting 37, first unthreaded hole 38, first tapped hole 39, the one T shape cylindrical slot 40, the bigger cylindrical slot 41 of the one T shape cylindrical slot 40 lower width, cylindrical slot 42, the second column permanent magnets that the one T shape cylindrical slot 40 upper width are less, 43, the second column briquetting 44, second unthreaded hole, 45, the second tapped holes, 46, the two T shape cylindrical slot 47, the less cylindrical slot 49 of cylindrical slot 48, the two T shape cylindrical slot, 47 lower width that the 2nd T shape cylindrical slot 47 upper width are bigger.

Embodiment

Below in conjunction with accompanying drawing the utility model is described further.

The utility model proposes a kind of fluid damper, utilize the piston motion in magnetic force and the spring promotion damper, when piston motion, damp liquid flows through the little round tube hole (damping hole) on the piston, the effect of control vibration is played in power consumption when damp liquid flows through little round tube hole (damping hole) on the piston.

Embodiment's of the present utility model following explanation in fact only is exemplary, and purpose never is to limit application of the present utility model or use.

The utility model is selected nonmagnetic substance, damp liquid, the permanent magnetic iron block stock as this fluid damper for use, and damp liquid is filled in the closed hydraulic pressure cylinder.Specifically utilize spring and magnetic force to promote piston motion, when piston motion, the aperture (damping hole) that damp liquid passes on the piston plays dissipative structure vibrational energy effect.This fluid damper can be divided into two kinds of forms, is described below respectively:

The fluid damper of first kind of form comprises independently two-part up and down, this fluid damper top is made up of top disc flange, the first ring permanent magnetic iron block, the first ring briquetting, the top disc flange has a T shape toroidal cavity, and the first ring permanent magnetic iron block is fixed in the T shape toroidal cavity of top disc flange by the first ring briquetting;

This fluid damper bottom comprises: disk, lower disk flange, oil hydraulic cylinder, piston, circular shaft, first spring, second spring, the second ring permanent magnetic iron block and the second ring briquetting; Lower disk flange, disk and oil hydraulic cylinder are formed closed no leakage space, and damp liquid is full of this closed no leakage space; Be provided with circular hole at the circle centre position of piston and pass for circular shaft, the lower end surface of circular shaft does not have to leak with the lower disk flange and is connected, and the upper-end surface of circular shaft flushes with the outer surface of disk and do not have leakage and is connected; Piston places the oil hydraulic cylinder middle part by two springs, wherein the lower end of first spring is connected with piston upper surface, the upper end of first spring is connected with the top of circular shaft, and equal the thickness of disk apart from the distance of circular shaft upper-end surface, one end of second spring is connected with the piston lower surface, and the other end of second spring is connected bottom with circular shaft; First spring is to the dead in line of piston action line of action of force and piston; Second spring is to the dead in line of piston action line of action of force and piston; Piston has the 2nd T shape toroidal cavity, and the second ring permanent magnetic iron block is fixed in the 2nd T shape toroidal cavity of piston by the second ring briquetting; On piston, have damping hole, and satisfy the line of action of making a concerted effort of the damping force that produces when damp liquid flows through the roundlet through hole and the dead in line of circular shaft.The line of action of making a concerted effort of the suffered magnetic force of the first ring permanent magnetic iron block and the dead in line of circular shaft; The second ring permanent magnet is subjected to the line of action of making a concerted effort of magnetic force and the dead in line of circular shaft.The axis of the axis of the axis of the axis of the axis of top disc flange, the first ring permanent magnetic iron block, the first ring briquetting, the second ring permanent magnetic iron block, the second ring briquetting, disk axis, the axis of oil hydraulic cylinder, the axis of circular shaft, the dead in line of piston.

The fluid damper of second kind of form is characterised in that: on the basis of the fluid damper of first kind of form, and when keeping each the parts annexation of fluid damper of first kind of form and position relationship, replace the first ring permanent magnetic iron block with the first column permanent magnetic iron block, replace the first ring briquetting with the first column briquetting, replace the second ring permanent magnetic iron block with the second column permanent magnetic iron block, replace the second ring briquetting with the second column briquetting, can obtain the another kind of form of the utility model fluid damper.First spring is to the dead in line of piston action line of action of force and piston; Second spring is to the dead in line of piston action line of action of force and piston; The first column permanent magnetic iron block is subjected to the line of action of making a concerted effort of magnetic force and the dead in line of circular shaft; The second column permanent magnetic iron block is subjected to the line of action of making a concerted effort of magnetic force and the dead in line of circular shaft;

During use, top disc flange (or lower disk flange) is by being bolted on the oscillating body, and lower disk flange (or top disc flange) is by being bolted on the static basis.

The upper surface of the fluid damper piston 18 of this first kind of form has the 2nd T shape annular groove 31, the axis of the 2nd T shape annular groove 31 and the dead in line of piston 18, the 2nd T shape annular groove 31 is made up of the less annular groove 35 of the lower width of the 2nd T shape annular groove 31 and the bigger annular groove 34 of upper width of the 2nd T shape annular groove 31; The shape of the annular groove 35 that the shape of the second ring permanent magnetic iron block 21 and the lower width of the 2nd T shape annular groove 31 are less is identical, the annular groove 35 that the lower width of the size of the second ring permanent magnetic iron block 21 and the 2nd T shape annular groove 31 is less measure-alike; The second ring permanent magnetic iron block 21 places in the less annular groove 35 of the lower width of the 2nd T shape annular groove 31, the lower surface of the lower surface of the second ring permanent magnetic iron block 21 and the 2nd T shape annular groove 31 is fitted, i.e. the lower surface applying of the less annular groove 35 of the lower width of the lower surface of the second ring permanent magnetic iron block 21 and the 2nd T shape annular groove 31; The magnetic pole of the second ring permanent magnetic iron block 21 is at two end faces up and down; The shape of the annular groove 34 that the shape of the second ring briquetting 16 and the upper width of the 2nd T shape annular groove 31 are bigger is identical, the annular groove 34 that the upper width of the size of the second ring briquetting 16 and the 2nd T shape annular groove 31 is bigger measure-alike; The second inside thread hole 22 is uniform along the interior side ring surface of the bigger annular groove 34 of the upper width of the 2nd T shape annular groove 31, and the second outside screw hole 20 is uniform along the outside anchor ring of the bigger annular groove 34 of the upper width of the 2nd T shape annular groove 31; At the inboard uniform second inboard unthreaded hole 26 of the end face of the second ring briquetting 16, at uniform second outside unthreaded hole 19 in the end face outside of the second ring briquetting 16; The second ring briquetting 16 places in the bigger annular groove 34 of the upper width of the 2nd T shape annular groove 31, the upper surface of the lower surface of the second ring briquetting 16 and the second ring permanent magnetic iron block 21 is fitted, the upper surface flush of the upper surface of the second ring briquetting 16 and piston 18; The quantity of the second inboard unthreaded hole 26 on the second ring briquetting 16 is identical with the quantity in the second inside thread hole 22 of the 2nd T shape annular groove 31 of piston 18, the dead in line in the second inside thread hole 22 of the 2nd T shape annular groove 31 of the axis of the second inboard unthreaded hole 26 on the second ring briquetting 16 and piston 18, the quantity of second outside unthreaded hole 19 on the second ring briquetting 16 is identical with the quantity in the second outside screw hole 20 of the 2nd T shape annular groove 31 of piston 18, the dead in line in the second outside screw hole 20 of the 2nd T shape annular groove 31 of the axis of second outside unthreaded hole 19 on the second ring briquetting 16 and piston 18; The threaded end of second outside bolt 17 is passed second outside unthreaded hole 19 and is screwed into the second outside screw hole 20, the threaded end of the second inboard bolt 28 is passed the second inboard unthreaded hole 26 and is screwed into the second inside thread hole 22, when second outside bolt 17 and the second inboard bolt 28 were tightened, second outside bolt 17 and the second inboard bolt 28 compressed the second ring briquetting 16; Roundlet through hole 27 is uniform along a circumference on the piston 18, and roundlet through hole 27 must not be overlapping with the 2nd T shape annular groove 31; When damp liquid 15 flows through roundlet through hole 27 on the piston 18, the line of action of making a concerted effort of the damping force of generation and the dead in line of circular shaft 8.The lower surface of top disc flange 1 has a T shape annular groove 30, the axis of the one T shape annular groove 30 and the dead in line of top disc flange 1, a T shape annular groove 30 is made up of the less annular groove 33 of the upper width of a T shape annular groove 30 and the bigger annular groove 32 of lower width of a T shape annular groove 30; The shape of the annular groove 33 that the shape of the first ring permanent magnetic iron block 11 and the upper width of a T shape annular groove 30 are less is identical, the annular groove 33 that the upper width of the size of the first ring permanent magnetic iron block 11 and a T shape annular groove 30 is less measure-alike; The first ring permanent magnetic iron block 11 places in the less annular groove 33 of the upper width of a T shape annular groove 30, the upper surface of the upper surface of the first ring permanent magnetic iron block 11 and a T shape annular groove 30 is fitted, i.e. the upper surface applying of the less annular groove 33 of the upper width of the upper surface of the first ring permanent magnetic iron block 11 and a T shape annular groove 30; Two magnetic poles of the first ring permanent magnetic iron block 11 are respectively at two end faces up and down of annulus; The shape of the annular groove 32 that the shape of the first ring briquetting 5 and the lower width of a T shape annular groove 30 are bigger is identical, the annular groove 32 that the lower width of the size of the first ring briquetting 5 and a T shape annular groove 30 is bigger measure-alike; The first inside thread hole 7 is uniform along the interior side ring surface of the bigger annular groove 32 of the lower width of a T shape annular groove 30, and the first outside screw hole 12 is uniform along the outside anchor ring of the bigger annular groove 32 of the lower width of a T shape annular groove 30; At the inboard uniform first inboard unthreaded hole 6 of the end face of the first ring briquetting 5, at uniform first outside unthreaded hole 4 in the end face outside of the first ring briquetting 5; The first ring briquetting 5 places in the bigger annular groove 32 of the lower width of a T shape annular groove 30, the lower surface of the upper surface of the first ring briquetting 5 and the first ring permanent magnetic iron block 11 is fitted, and the lower surface of the first ring briquetting 5 flushes with the lower surface of top disc flange 1; The quantity of first outside unthreaded hole 4 on the first ring briquetting 5 is identical with the quantity in the first outside screw hole 12 of a T shape annular groove 30 of top disc flange 1, the dead in line in the first outside screw hole 12 of the one T shape annular groove 30 of the axis of first outside unthreaded hole 4 on the first ring briquetting 5 and top disc flange 1, the quantity of the first inboard unthreaded hole 6 is identical with the quantity in the first inside thread hole 7 of a T shape annular groove 30 of top disc flange 1 on the first ring briquetting 5, the dead in line in the first inside thread hole 7 of a T shape annular groove 30 of the axis of the first inboard unthreaded hole 6 and top disc flange 1 on the first ring briquetting 5; The threaded end of first outside bolt 3 is passed first outside unthreaded hole 4 and is screwed into the first outside screw hole 12, the threaded end of the first inboard bolt 10 is passed the first inboard unthreaded hole 6 and is screwed into the first inside thread hole 7, when first outside bolt 3 and the first inboard bolt 10 were tightened, first outside bolt 3 and the first inboard bolt 10 compressed the first ring briquetting 5; First bolt hole 2 is uniform along a circumference of top disc flange 1, and first bolt hole 2 must not be overlapping with a T shape annular groove 30, and first bolt hole 2 is distributed in beyond the T shape annular groove 30; The dead in line of the axis of the first ring permanent magnetic iron block 11 and the second ring permanent magnetic iron block 21, the axis of top disc flange 1, the axis of lower disk flange 24, the axis of oil hydraulic cylinder 14, the axis of disk 13, the axis of circular shaft 8, the axis of piston 18, the dead in line of the axis of first coil component spring 9 and second coil component spring 25, the upper surface of lower disk flange 24 does not have leakage with the lower end surface of oil hydraulic cylinder 14 and is connected, disk 13 does not have leakage with the upper-end surface of oil hydraulic cylinder 14 and is connected, circular shaft 8 lower end surfaces do not have leakage with lower disk flange 24 and are connected, the upper-end surface of circular shaft 8 flushes with the upper-end surface of disk 13 and does not have to leak and is connected lower disk flange 24 and oil hydraulic cylinder 14, disk 13 and circular shaft 8 seal out a closed no leakage space that is full of damp liquid 15; Second bolt hole 23 is uniform along circumference on the lower disk flange 24, and second bolt hole 23 is distributed in oil hydraulic cylinder 14 outsides; Circular shaft 8 passes piston 18, first coil component spring 9 and second coil component spring 25; Piston 18 is positioned at oil hydraulic cylinder 14 middle parts; The lower end of first coil component spring 9 is connected with piston 18 upper surfaces, and the upper end of first coil component spring 9 is connected with the top of the cylndrical surface of circular shaft 8, and the distance that the upper-end surface of circular shaft 8 is left in the upper end of first coil component spring 9 is the thickness of disk 13; One end of second coil component spring 25 is connected with piston 18 lower surfaces, being connected bottom of the cylndrical surface of the other end of second coil component spring 25 and circular shaft 8; The direction of vibration of oscillating body and oil hydraulic cylinder 14 deads in line during use; Top disc flange 1 is fixed by bolts on the oscillating body by first bolt hole 2 on it, lower disk flange 24 is fixed by bolts on the static basis by second bolt hole 23 on it, and the distance of the upper surface of the lower surface of top disc flange 1 and disk 13 is greater than the maximum vibration displacement of oscillating body with respect to the basis; Or lower disk flange 24 is fixed by bolts on the oscillating body by second bolt hole 23 on it, top disc flange 1 is fixed by bolts on the static basis by first bolt hole 2 on it, and the distance of the upper surface of the lower surface of lower disk flange 24 and top disc flange 1 is greater than the maximum vibration displacement of oscillating body with respect to the basis; The dead in line of the axis of the axis of the axis of the axis of the axis of top disc flange 1, lower disk flange 24, oil hydraulic cylinder 14, disk 13, piston 18 and circular shaft 8.Middle minute cylndrical surface of name annulus, the axis of middle minute cylndrical surface of annulus and the dead in line of annulus, the diameter of middle minute cylndrical surface of annulus is the average of annulus external diameter and internal diameter; The axis of middle minute cylndrical surface of the annular groove 32 that the lower width of the one T shape annular groove 30 is bigger, the axis of middle minute cylndrical surface of the annular groove 33 that the upper width of the one T shape annular groove 30 is less, the dead in line of middle minute cylndrical surface of the annular groove 35 that the lower width of the axis of middle minute cylndrical surface of the annular groove 34 that the upper width of the 2nd T shape annular groove 31 is bigger and the 2nd T shape annular groove 31 is less.

Each parts of this damper are except that the first ring permanent magnetic iron block 11 and the second ring permanent magnetic iron block 21, and other parts are all made with non-ferromagnetic metal or alloy material (for example aluminum alloy, stainless steel etc.).All springs are all chosen the coil component spring form, and the process of fluid damping implement body manufacturing can follow these steps to carry out:

The first step: according to the vibration control requirement, selected top disc flange 1, the first ring briquetting 5, circular shaft 8, the first coil component springs 9, the first ring permanent magnetic iron blocks 11, disk 13, oil hydraulic cylinder 14, the second ring briquettings 16, piston 18, the second ring permanent magnetic iron block 21, lower disk flange 24, the second coil component springs 25, the size of the one T shape annular groove 30, the two T shape annular grooves 31 and circular hole 29; Selected silicone oil is as damp liquid 15; According to the vibration control requirement, selected first bolt hole, 2, the first outside bolts 3, first outside unthreaded hole, 4, the first inboard unthreaded holes, 6, the first inside thread holes 7, the first inboard bolt, 10, the first outside screw holes, 12, the second outside bolts 17, the second

inboard bolt

28,20, the second inside thread holes 22, second outside unthreaded hole, 19, the second outside screw holes, quantity, position and the size of second bolt hole, 23, the second inboard unthreaded holes 26 and roundlet through hole 27.For example: after installing at damper, piston 18 is positioned at the installation requirement of the centre of oil hydraulic cylinder 14, after damper installs, piston 18 is in the equilibrium of forces state under the acting in conjunction of magnetic force and first coil component spring 9 and second coil component spring 25, determined the parameter of first coil component spring 9 and second coil component spring 25 by conventional Mechanics Calculation.When vibration was simple harmonic oscillation, the height of oil hydraulic cylinder 14 was not less than the twice of the maximum vibration displacement of oscillating body.

Second step: circular shaft 8 passes the circular hole 29 of piston 18, one end of first coil component spring 9 is welded on piston 18 upper surfaces, the other end of first coil component spring 9 is welded on the top of the cylndrical surface of circular shaft 8, and the distance of the upper end of first coil component spring 9 from the upper-end surface of circular shaft 8 is the thickness of disk 13; One end of second coil component spring 25 is welded on piston 18 lower surfaces, and the cylndrical surface that the other end of second coil component spring 25 is welded on circular shaft 8 bottom; All must guarantee the axis of circular shaft 8, the axis of piston 18, the axis of first coil component spring 9 and the dead in line of second coil component spring 25 before and after the welding.Must guarantee the effect line of action of force of 9 pairs of pistons 18 of first coil component spring and the dead in line of piston 18 after the welding; The effect line of action of force of 25 pairs of pistons 18 of second coil component spring and the dead in line of piston 18.

The 3rd step: the second ring permanent magnetic iron block 21 is placed in the less annular groove 35 of the lower width of the 2nd T shape annular groove 31 of piston 18, the arctic is down up in the magnetic pole South Pole of the second ring permanent magnetic iron block 21; The lower surface of the lower surface of the second ring permanent magnetic iron block 21 and the 2nd T shape annular groove 31 is fitted, i.e. the lower surface applying of the less annular groove 35 of the lower width of the lower surface of the second ring permanent magnetic iron block 21 and the 2nd T shape annular groove 31; The second ring briquetting 16 is placed in the bigger annular groove 34 of the upper width of the 2nd T shape annular groove 31, the upper surface of the lower surface of the second ring briquetting 16 and the second ring permanent magnetic iron block 21 is fitted, the upper surface flush of the upper surface of the second ring briquetting 16 and piston 18; With the axial alignment (coincidence) in the second inside thread hole 22 on the 2nd T shape annular groove 31 of the axis of the second inboard unthreaded hole 26 on the second ring briquetting 16 and piston 18, with the dead in line in the second outside screw hole 20 on the 2nd T shape annular groove 31 of the axis of second outside unthreaded hole 19 on the second ring briquetting 16 and piston 18; The threaded end of second outside bolt 17 is passed second outside unthreaded hole 19 to be screwed into the second outside screw hole 20 and to tighten, the threaded end of the second inboard bolt 28 is passed the second inboard unthreaded hole 26 and is screwed into the second inside thread hole 22 and tightens, when second outside bolt 17 and the second inboard bolt 28 were tightened, second outside bolt 17 and the second inboard bolt 28 compressed the second ring briquetting 16.

The 4th step: the lower end surface of circular shaft 8 is welded on the upper surface of lower disk flange 24, all must guarantees the dead in line of the axis and the circular shaft 8 of lower disk flange 24 before and after the welding.

The 5th step: oil hydraulic cylinder 14 is enclosed within outside the piston 18, and the upper surface welding of the lower end surface of oil hydraulic cylinder 14 and lower disk flange 24 all must guarantee the dead in line of the axis and the oil hydraulic cylinder 14 of lower disk flange 24 before and after the welding.

The 6th step: the circle centre position at disk 13 bores circular hole a, and the diameter of circular hole a is a bit larger tham the diameter (welding conditions are got concrete numerical value routinely) of circular shaft 8, the dead in line of the axis of circular hole a and disk 13; Axis symmetry about disk 13 is bored small sircle hole b and small sircle hole c on disk 13 again, small sircle hole b and small sircle hole c axis separately equal half of radius sum of the inside radius of oil hydraulic cylinder 14 and circular hole a from the distance of the axis of disk 13, half the inside radius of small sircle hole b and small sircle hole c less than oil hydraulic cylinder 14 deduct circular hole a radius numerical value 1/2nd.

The 7th step: then the top of circular shaft 8 was inserted for the 6th step and bore among the circular hole a, the lower surface of disk 13 is placed on the upper-end surface of oil hydraulic cylinder 14.The upper-end surface of oil hydraulic cylinder 14 is welded on the lower surface of disk 13, again with the upper-end surface of circular shaft 8 and disk 13 the 6th the step institute circular hole a place of boring weld, weld front and back and all must guarantee the axis of oil hydraulic cylinder 14, the axis of disk 13, the dead in line of circular shaft 8.

The 8th step: use earlier funnel that silicone oil is filled with oil hydraulic cylinder 14 as damp liquid by the 6th step small sircle hole b that bores, after observing damp liquid and filled with oil hydraulic cylinder 14 by small sircle hole b and small sircle hole c, again with the 6th go on foot the small sircle hole b that bores and small sircle hole c weld and block.

The 9th step: the first ring permanent magnetic iron block 11 is placed in the less annular groove 33 of the upper width of a T shape annular groove 30 of top disc flange 1, the arctic is down up in the magnetic pole South Pole of the first ring permanent magnetic iron block 11; The upper surface of the upper surface of the first ring permanent magnetic iron block 11 and a T shape annular groove 30 is fitted, i.e. the upper surface applying of the less annular groove 33 of the upper width of the upper surface of the first ring permanent magnetic iron block 11 and a T shape annular groove 30; The first ring briquetting 5 is placed in the bigger annular groove 32 of the lower width of a T shape annular groove 30, the lower surface of the upper surface of the first ring briquetting 5 and the first ring permanent magnetic iron block 11 is fitted, and the lower surface of the first ring briquetting 5 flushes with the lower surface of top disc flange 1; With the axis of first outside unthreaded hole 4 on the first ring briquetting 5 and the axial alignment (coincidence) in the first outside screw hole 12 of a T shape annular groove 30 of top disc flange 1, the axial alignment in the first inside thread hole 7 of a T shape annular groove 30 of the axis of the first inboard unthreaded hole 6 on the first ring briquetting 5 and top disc flange 1; The threaded end of first outside bolt 3 is passed first outside unthreaded hole 4 to be screwed into the first outside screw hole 12 and to tighten, the threaded end of the first inboard bolt 10 is passed the first inboard unthreaded hole 6 and is screwed into the first inside thread hole 7 and tightens, when first outside bolt 3 and the first inboard bolt 10 were tightened, first outside bolt 3 and the first inboard bolt 10 compressed the first ring briquetting 5.

So far just can realize the model utility of first kind of fluid damper.

On the basis of the fluid damper of first kind of form, and when keeping each the parts annexation of fluid damper of first kind of form and position relationship, replace the first ring permanent magnetic iron block 11 with the first column permanent magnetic iron block 36, replace the first ring briquetting 5 with the first column briquetting 37, replace the second ring permanent magnetic iron block 21 with the second column permanent magnetic iron block 43, behind the second column briquetting, 44 replacements, the second ring briquetting 16, obtain the another kind of form of the utility model fluid damper.

The upper surface of the piston 18 on the fluid damper of second kind of form has the 2nd T shape cylindrical slot 47, the two T shape cylindrical slot 47 to be made up of the less cylindrical slot 49 of the lower width of the 2nd T shape cylindrical slot 47 and the bigger cylindrical slot 48 of upper width of the 2nd T shape cylindrical slot 47; The shape of the cylindrical slot 49 that the shape of the second column permanent magnetic iron block 43 and the lower width of the 2nd T shape cylindrical slot 47 are less is identical, the cylindrical slot 49 that the lower width of the size of the second column permanent magnetic iron block 43 and the 2nd T shape cylindrical slot 47 is less measure-alike; The second column permanent magnetic iron block 43 places in the less cylindrical slot 49 of the lower width of the 2nd T shape cylindrical slot 47, the lower surface of the lower surface of the second column permanent magnetic iron block 43 and the 2nd T shape cylindrical slot 47 is fitted, i.e. the lower surface applying of the less cylindrical slot 49 of the lower width of the lower surface of the second column permanent magnetic iron block 43 and the 2nd T shape cylindrical slot 47; The magnetic pole of the second column permanent magnetic iron block 43 is at two end faces up and down; The shape of the cylindrical slot 48 that the shape of the second column briquetting 44 and the upper width of the 2nd T shape cylindrical slot 47 are bigger is identical, the cylindrical slot 48 that the upper width of the size of the second column briquetting 44 and the 2nd T shape cylindrical slot 47 is bigger measure-alike; Second tapped hole 46 is uniform along a circumference of the bigger cylindrical slot 48 of the upper width of the 2nd T shape cylindrical slot 47; At uniform second unthreaded hole 45 of a circumference of the second column briquetting 44; The second column briquetting 44 places in the bigger cylindrical slot 48 of the upper width of the 2nd T shape cylindrical slot 47, and the upper surface of the lower surface of the second column briquetting 44 and the second column permanent magnetic iron block 43 is fitted, the upper surface flush of the upper surface of the second column briquetting 44 and piston 18; The quantity of second unthreaded hole 45 on the second column briquetting 44 is identical with the quantity of second tapped hole 46 of the 2nd T shape cylindrical slot 47 of piston 18, the dead in line of second tapped hole 46 of the 2nd T shape cylindrical slot 47 of the axis of second unthreaded hole 45 on the second column briquetting 44 and piston 18; Passing second unthreaded hole 45 with bolt end is screwed into second tapped hole 46 and the second column briquetting 44 can be compressed; The lower surface of top disc flange 1 has a T shape cylindrical slot 40, the one T shape cylindrical slot 40 to be made up of the less cylindrical slot 42 of the upper width of a T shape cylindrical slot 40 and the bigger cylindrical slot 41 of lower width of a T shape cylindrical slot 40; The shape of the cylindrical slot 42 that the shape of the first column permanent magnetic iron block 36 and the upper width of a T shape cylindrical slot 40 are less is identical, the cylindrical slot 42 that the upper width of the size of the first column permanent magnetic iron block 36 and a T shape cylindrical slot 40 is less measure-alike; The first column permanent magnetic iron block 36 places in the less cylindrical slot 42 of the upper width of a T shape cylindrical slot 40, the upper surface of the upper surface of the first column permanent magnetic iron block 36 and a T shape cylindrical slot 40 is fitted, i.e. the upper surface applying of the less cylindrical slot 42 of the upper width of the upper surface of the first column permanent magnetic iron block 36 and a T shape cylindrical slot 40; The magnetic pole of the first column permanent magnetic iron block 36 is at two end faces up and down; The shape of the cylindrical slot 41 that the shape of the first column briquetting 37 and the lower width of a T shape cylindrical slot 40 are bigger is identical, the cylindrical slot 41 that the lower width of the size of the first column briquetting 37 and a T shape cylindrical slot 40 is bigger measure-alike; First tapped hole 39 is uniform along a circumference of the bigger cylindrical slot 41 of the lower width of a T shape cylindrical slot 40; At uniform first unthreaded hole 38 of a circumference of the first column briquetting, 37 end faces; The first column briquetting 37 places in the bigger cylindrical slot 41 of the lower width of a T shape cylindrical slot 40, the lower surface of the upper surface of the first column briquetting 37 and the first column permanent magnetic iron block 36 is fitted, and the lower surface of the first column briquetting 37 flushes with the lower surface of top disc flange 1; The quantity of first unthreaded hole 38 on the first column briquetting 37 is identical with the quantity of first tapped hole 39 of a T shape cylindrical slot 40 of top disc flange 1, the dead in line of first tapped hole 39 of a T shape cylindrical slot 40 of the axis of first unthreaded hole 38 on the first column briquetting 37 and top disc flange 1; Pass first unthreaded hole 38 with bolt and be screwed into first tapped hole 39, the first column briquetting 37 can be compressed;

Each parts of this damper are except that the first column permanent magnetic iron block 36 and the second column permanent magnetic iron block 43, other parts are all with non-ferromagnetic metal or alloy material (aluminum alloy for example, stainless steel etc.) make, the first column permanent magnetic iron block 36 and the second column permanent magnetic iron block 43 are all chosen the cylindrical magnet iron block, and all springs are all chosen the coil component spring form.The process of fluid damping implement body manufacturing can follow these steps to carry out:

The first step: according to the vibration control requirement, selected top disc flange 1, the first column briquetting 37, circular shaft 8, the first coil component springs 9, the first column permanent magnetic iron blocks 36, disk 13, oil hydraulic cylinder 14, the second column briquettings 44, piston 18, the second column permanent magnetic iron block 43, lower disk flange 24, the second coil component springs 25, the size of the one T shape cylindrical slot 40, the two T shape cylindrical slot 47 and circular hole 29; Selected silicone oil is as damp liquid 15; According to the vibration control requirement, quantity, position and the size of selected first bolt hole, 2, the first unthreaded hole 38, the first tapped holes, 39, the second unthreaded hole 45, the second tapped holes, 46, the second bolts hole 23 and roundlet through hole 27.For example: after installing at damper, piston 18 is positioned at the installation requirement of the centre of oil hydraulic cylinder 14, after damper installs, piston 18 is in the equilibrium of forces state under the acting in conjunction of magnetic force and first coil component spring 9 and second coil component spring 25, determined the parameter of first coil component spring 9 and second coil component spring 25 by conventional Mechanics Calculation.When vibration was simple harmonic oscillation, the height of oil hydraulic cylinder 14 was not less than the twice of the maximum vibration displacement of oscillating body.

Second step: circular shaft 8 passes the circular hole 29 of piston 18, one end of first coil component spring 9 is welded on piston 18 upper surfaces, the other end of first coil component spring 9 is welded on the top of the cylndrical surface of circular shaft 8, and the distance of the upper end of first coil component spring 9 from the upper-end surface of circular shaft 8 is the thickness of disk 13; One end of second coil component spring 25 is welded on piston 18 lower surfaces, and the cylndrical surface that the other end of second coil component spring 25 is welded on circular shaft 8 bottom; All must guarantee the axis of circular shaft 8, the axis of piston 18, the axis of first coil component spring 9 and the dead in line of second coil component spring 25 before and after the welding; Must guarantee the effect line of action of force of 9 pairs of pistons 18 of first coil component spring and the dead in line of piston 18 after the welding; The effect line of action of force of 25 pairs of pistons 18 of second coil component spring and the dead in line of piston 18.

The 3rd step: the second column permanent magnetic iron block 43 is placed in the less cylindrical slot 49 of the lower width of the 2nd T shape cylindrical slot 47 of piston 18, the arctic is down up in the magnetic pole South Pole of the second column permanent magnetic iron block 43; The lower surface of the lower surface of the second column permanent magnetic iron block 43 and the 2nd T shape cylindrical slot 47 is fitted, i.e. the lower surface applying of the less cylindrical slot 49 of the lower width of the lower surface of the second column permanent magnetic iron block 43 and the 2nd T shape cylindrical slot 47; The second column briquetting 44 is placed in the bigger cylindrical slot 48 of the upper width of the 2nd T shape cylindrical slot 47, the upper surface of the lower surface of the second column briquetting 44 and the second column permanent magnetic iron block 43 is fitted, the upper surface flush of the upper surface of the second column briquetting 44 and piston 18; Dead in line with second tapped hole 46 on the 2nd T shape cylindrical slot 47 of the axis of second unthreaded hole 45 on the second column briquetting 44 and piston 18; Pass second unthreaded hole 45 with bolt and be screwed into second tapped hole 46 and tighten, the second column briquetting 44 is compressed.

The 9th step: the first column permanent magnetic iron block 36 is placed in the less cylindrical slot 42 of the upper width of a T shape cylindrical slot 40 of top disc flange 1, the arctic is down up in the magnetic pole South Pole of the first column permanent magnetic iron block 36; The upper surface of the upper surface of the first column permanent magnetic iron block 36 and a T shape cylindrical slot 40 is fitted, i.e. the upper surface applying of the less cylindrical slot 42 of the upper width of the upper surface of the first column permanent magnetic iron block 36 and a T shape cylindrical slot 40; The first column briquetting 37 is placed in the bigger cylindrical slot 41 of the lower width of a T shape cylindrical slot 40, the lower surface of the upper surface of the first column briquetting 37 and the first column permanent magnetic iron block 36 is fitted, and the lower surface of the first column briquetting 37 flushes with the lower surface of top disc flange 1; Axial alignment (coincidence) with axis with first tapped hole 39 of a T shape cylindrical slot 40 of top disc flange 1 of first unthreaded hole 38 on the first column briquetting 37; Pass first unthreaded hole 38 with bolt and be screwed into first tapped hole 39 and tighten, the first column briquetting 37 is compressed.

So far just can realize the fluid damper model utility of second kind of form.

When the annexation of each parts that keeps fluid damper and position relationship, when the shape of the shape of the shape of the shape of first permanent magnetic iron block 11, first briquetting 5, second permanent magnetic iron block 21, second briquetting 16 is ring, promptly adopt the first ring permanent magnetic iron block 11, the first ring briquetting 5, the second ring permanent magnetic iron block 21, behind the second ring briquetting 16, obtain first kind of form of the utility model fluid damper; When the shape of the shape of the shape of the shape of first permanent magnetic iron block 11, first briquetting 5, second permanent magnetic iron block 21, second briquetting 16 is column, promptly replace the first ring permanent magnetic iron block 11 with the first column permanent magnetic iron block 36, replace the first ring briquetting 5 with the first column briquetting 37, replace the second ring permanent magnetic iron block 21 with the second column permanent magnetic iron block 43, behind the second column briquetting, 44 replacements, the second ring briquetting 16, obtain second kind of form of the utility model fluid damper.

Claims

1. fluid damper, it is characterized in that: this fluid damper comprises separate two-part up and down, this fluid damper top comprises: top disc flange (1), first permanent magnetic iron block (11), first briquetting (5), and first permanent magnetic iron block (11) is fixed in the top disc flange (1) by first briquetting (5);

This fluid damper bottom comprises: disk (13), the lower disk flange (24) that is oppositely arranged with disk (13), disk (13) and lower disk flange (24) do not had leak the oil hydraulic cylinder (14) that is connected, lower disk flange (24), disk (13) and oil hydraulic cylinder (14) are formed closed no leakage space, and damp liquid (15) is full of this closed no leakage space;

This fluid damper bottom also comprises piston (18), circular shaft (8), first spring (9), second spring (25), second permanent magnetic iron block (21), second briquetting (16), circle centre position at piston (18) is provided with circular hole (29), circular shaft (8) passes the circular hole (29) of piston (18), circular shaft (8) lower end surface does not have leakage with lower disk flange (24) upper surface and is connected, and the upper-end surface of circular shaft (8) flushes with the outer surface of disk (13) and do not have to leak and is connected; Piston (18) is along oil hydraulic cylinder (14) axial motion, piston (18) places the middle part of oil hydraulic cylinder (14) by first spring (9) and second spring (25), wherein the lower end of first spring (9) is connected with piston (18) upper surface, the upper end of first spring (9) is connected with the top of circular shaft (8), one end of second spring (25) is connected with piston (18) lower surface, and the other end of second spring (25) is connected bottom with circular shaft (8); Second permanent magnetic iron block (21) is fixed in the piston (18) by second briquetting (16), have little round tube hole (27) on the piston (18), and the line of action of making a concerted effort of the damping force that when damp liquid (15) flows through little round tube hole (27), produces and the dead in line of circular shaft (8).

2. fluid damper according to claim 1 is characterized in that: the shape of the shape of the shape of first permanent magnetic iron block (11), first briquetting (5), the shape of second permanent magnetic iron block (21) and second briquetting (16) is ring or column.

3. fluid damper according to claim 1 and 2 is characterized in that: the distance that the upper-end surface of circular shaft (8) is left in the upper end of first spring (9) is the thickness of disk (13).

4. fluid damper according to claim 1 and 2 is characterized in that: the axis of the axis of the axis of top disc flange (1), disk (13), the axis of oil hydraulic cylinder (14), piston (18) and the dead in line of circular shaft (8); First spring (9) is to the dead in line of the effect line of action of force and the piston (18) of piston (18); Second spring (25) is to the dead in line of the effect line of action of force and the piston (18) of piston (18); The line of action of making a concerted effort of the suffered magnetic force of first permanent magnetic iron block (11) and the dead in line of circular shaft (8); The line of action of making a concerted effort of the suffered magnetic force of second permanent magnetic iron block (21) and the dead in line of circular shaft (8).