CN203730653U - Low coupling wall-mounted vibration isolator and vibration isolator group - Google Patents

Abstract

The utility model provides a low coupling wall-mounted vibration isolator and a vibration isolator group, wherein the low coupling wall-mounted vibration isolator comprises a shell and a center shaft, wherein the center shaft is arranged in the center of the shell, the upper end of the center shaft stretches outside the top portion of the shell, the lower end of the center shaft is not contacted with the shell, a step surface is arranged on the outer edge of the lower portion of the center shaft, crash pads are respectively arranged on the upper and the lower sides of the step surface, conical springs, a cushion cylinder and a cone spring are orderly arranged between the two crash pads from top to bottom, the center shaft and the cone spring are limited through the conical springs, the outer ends of the conical springs and the cone spring are connected with the shell, the inner ends of the conical springs and the cone spring are connected with the step surface of the center shaft, the cushion cylinder and the step surface are connected, a gap is arranged between the cushion cylinder and the shell, a damper is arranged on the upper portion of the center shaft, and the damper and a slide plate are supported on the shell through a belleville spring. The low coupling wall-mounted vibration isolator enables the center shaft connected with wall-mounted equipment to forwardly extend or backwardly retract a required length in a static state by changing the positions of the two conical springs, can balance overturning moment produced by the wall-mounted equipment, and reduces vibration coupling of the wall-mounted equipment in various directions.

Description

A kind of hanging vibration isolator of low coupled wall and vibration isolator group

Technical field

The utility model relates to electronic equipment vibration isolation buffering device field, specifically the hanging vibration isolator of a kind of low coupled wall and vibration isolator group.

Background technique

At present, so-called wall-hanging vibration isolator is to be directly used as wall-hanging vibration isolator by the installation direction of change bottom vibration isolator (rubber, steel-wire isolator) to use substantially.Because there is a throw of eccentric at center of gravity and the vibration isolator yielding support center of wall-mounted device, the gravity of equipment can produce tilting moment, common vibration isolator cannot solve the equilibrium problem of tilting moment completely, cause wall-mounted device produce sagging and tilt in state of rest, under vibrational state, also cannot solve wall-mounted device respectively to the coupled problem vibrating.

Model utility content

The utility model is in order to solve the problem of prior art, the vibration isolator that provides a kind of elastic center both sides that the volute spring that rigidity (or precompression) is different is respectively housed, and the tilting moment can balance wall-mounted device producing, reduces equipment respectively to the coupling of vibration.

The utility model comprises shell and central shaft, central shaft is positioned at shell center, cover top portion is stretched out in its upper end, lower end does not contact with shell, in the outer rim of central shaft bottom, there is step surface, cushion pad is equipped with respectively in the upper and lower both sides of step surface, is provided with successively from the top down volute spring, dsah-pot and cone spring between two cushion pads; Central shaft is spacing by volute spring and cone spring, and volute spring is connected with shell with cone spring outer end, and the inner is connected with central shaft step surface; Dsah-pot is connected with step surface, and leaves space between shell; Central shaft top is provided with damper, and damper is supported on shell by butterfly spring and slide plate.

Further improve, described shell is taking base as basis, and lower plate is equipped with in base below, hollow upper cover in the middle of being equipped with by screw thread above base.Little butterfly spring is housed between described upper cover and damper.Rotation upper cover, the pressure of adjustable little butterfly spring, i.e. damping force adjustable.

Further improve, described damper comprises the damping ring being enclosed within central shaft outer rim, and damping ring overcoat has tapered collar and gland, and outermost surface cover has cushion collar.Between gland and damping ring, be provided with pad.The surface of contact of damping ring and central shaft is curved surface.

The utility model also provides a kind of low coupling wall hanging vibration isolator group, comprise some corresponding low coupling wall hanging vibration isolators that use between two, in vibration isolator, pass through to change the relative position of volute spring and cone spring, central shaft is stretched out forward in the time of static state or indentation Len req backward, the central shaft of two corresponding vibration isolators is extended or retracted length difference in the time of static state.Utilize the length difference of its central shaft, the tilting moment can balance wall-mounted device producing, reduces equipment respectively to the coupling of vibration.

Brief description of the drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is yoz floor map.

Embodiment

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

The utility model structure as shown in Figure 1, comprise shell and central shaft 1, central shaft 1 is positioned at shell center, cover top portion is stretched out in its upper end, lower end does not contact with shell, it is characterized in that: in central shaft 1 bottom outer rim, have step surface, the upper and lower both sides of step surface are equipped with respectively and between 12, two cushion pads 12 of cushion pad, are provided with successively from the top down volute spring 9, dsah-pot 10 and cone spring 11; Central shaft 1 is spacing by volute spring 9 and cone spring 11, and volute spring 9 is connected with shell with cone spring 11 outer ends, and the inner is connected with central shaft 1 step surface; Dsah-pot 10 is connected with step surface, and leaves space between shell; Central shaft 1 top is provided with damper, and damper is supported on shell by butterfly spring 16 and slide plate 8.

Described shell is taking base 13 as basis, and lower plate 14 is equipped with in base 13 belows, and middle hollow upper cover 2 is equipped with by screw thread in base 13 tops.Little butterfly spring 15 is housed between upper cover 2 and damper.Rotation upper cover 2, the pressure of adjustable little butterfly spring 15, i.e. damping force adjustable.

Described damper comprises the damping ring 7 being enclosed within central shaft 2 outer rims, and damping ring 7 overcoats have tapered collar 6 and gland 3, and outermost surface cover has cushion collar 5.Between gland 3 and damping ring 7, be provided with pad 4.Damping ring 7 is curved surface with the surface of contact of central shaft 1.

Two corresponding composition vibration isolator groups that use of vibration isolator, in vibration isolator, pass through to change the relative position of volute spring and cone spring, central shaft is stretched out forward in the time of static state or indentation Len req backward, the central shaft of two corresponding vibration isolators is extended or retracted length difference in the time of static state.Utilize the length difference of its central shaft, the tilting moment can balance wall-mounted device producing, reduces equipment respectively to the coupling of vibration.

Wall-hanging vibrating isolation system is, by vibration isolator, electronic equipment elasticity is installed on to the mounting type on carrier bulkhead.Taking yoz plane as example, as shown in Figure 2, due to eccentric height h between equipment center of gravity C and yielding support center O _cproduce tilting moment M ₀, its static balancing condition is:

$\left\{\begin{array}{cc}{M}_0={\mathrm{mgh}}_c& 1a\\ F_{z0}=\mathrm{mg}& 1b\end{array}\right.---\left(1\right)$

Condition of dynamic balance is: (taking z axially as example)

$\left\{\begin{array}{cc}{M}_x=m\stackrel{..}{z}{h}_c& 2a\\ F_{z0}=m\stackrel{..}{z}& 2b\end{array}\right.---\left(2\right)$

For this reason, equipment is at F _cand M _cunder effect, can occur and tilt, for this reason, must have F _z0and M _xcontend with it:

$\left\{\begin{array}{cc}{M}_x=(K_{2y}+K_{1y}){\mathrm{\δ}}_y\·a+(K_{2y}+K_{1y}){\mathrm{\δ}}_y\·b& 3a\\ \mathrm{Fz}=\underset{i=1}{\overset{4}{\mathrm{\Σ}}}{K}_{\mathrm{zi}}{\mathrm{\δ}}_z=\mathrm{mg}& 3b\end{array}\right.---\left(3\right)$

K ₁and K ₂value by system frequency determine global stiffness K _x, K _yand K _z, then determine the corresponding K of each vibration isolator according to position of centre of gravity _i.K in formula _y=(K ₁+ K ₂) × 4.

For keeping equipment operating face A perpendicular to the ground, vibrating isolation system must have predeformation δ _y, before erection unit not, top vibration isolator to bulkhead near δ _y, bottom vibration isolator stretches out forward δ _y, δ _ynumerical value determined by 1a and 3a.

It is in the time of the axial translation of z that low coupling requires, and does not produce the rotation around ox axle, requires:

In like manner, in the time of the axial translation of x, meet

During due to the axial translation of y, barycenter C and O, at same axis, will not produce and be used to mental and physical efforts square.

The concrete application approach of the utility model is a lot; the above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle; can also make some improvement, these improve and also should be considered as protection domain of the present utility model.

Claims (7)

1. the hanging vibration isolator of low coupled wall, comprise shell and central shaft (1), central shaft (1) is positioned at shell center, cover top portion is stretched out in its upper end, lower end does not contact with shell, it is characterized in that: in the outer rim of central shaft (1) bottom, have step surface, cushion pad (12) is equipped with respectively in the upper and lower both sides of step surface, between two cushion pads (12), be provided with successively from the top down volute spring (9), dsah-pot (10) and cone spring (11); Central shaft (1) is spacing by volute spring (9) and cone spring (11), and volute spring (9) is connected with shell with cone spring (11) outer end, and the inner is connected with central shaft (1) step surface; Dsah-pot (10) is connected with step surface, and leaves space between shell; Central shaft (1) top is provided with damper, and damper is supported on shell by butterfly spring (16) and slide plate (8).

2. the hanging vibration isolator of low coupled wall according to claim 1, is characterized in that: described shell is taking base (13) as basis, and lower plate (14) is equipped with in base (13) below, and middle hollow upper cover (2) is equipped with by screw thread in base (13) top.

3. the hanging vibration isolator of low coupled wall according to claim 2, is characterized in that: between described upper cover (2) and damper, little butterfly spring (15) is housed.

4. the hanging vibration isolator of low coupled wall according to claim 1, it is characterized in that: described damper comprises the damping ring (7) being enclosed within central shaft (2) outer rim, damping ring (7) overcoat has tapered collar (6) and gland (3), and outermost surface cover has cushion collar (5).

5. the hanging vibration isolator of low coupled wall according to claim 4, is characterized in that: between described gland (3) and damping ring (7), be provided with pad (4).

6. the hanging vibration isolator of low coupled wall according to claim 4, is characterized in that: described damping ring (7) is curved surface with the surface of contact of central shaft (1).

7. the hanging vibration isolator group of low coupled wall, comprise some corresponding low coupling wall hanging vibration isolators that use between two, it is characterized in that: the relative position that passes through to change volute spring (9) and cone spring (11) in vibration isolator, central shaft (1) is stretched out forward in the time of static state or indentation Len req backward, the central shaft (1) of two corresponding vibration isolators extended or retracted length difference in the time of static state.