CN206129957U - U type rubber shock absorber - Google Patents
U type rubber shock absorber Download PDFInfo
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- CN206129957U CN206129957U CN201621143684.1U CN201621143684U CN206129957U CN 206129957 U CN206129957 U CN 206129957U CN 201621143684 U CN201621143684 U CN 201621143684U CN 206129957 U CN206129957 U CN 206129957U
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- metallic framework
- shock absorber
- rubber shock
- metal framework
- shaped rubber
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- Vibration Dampers (AREA)
Abstract
The utility model discloses U type rubber shock absorber relates to a vibration damper who is used for the internal -combustion engine EMUs. Its purpose is in order to provide a U type rubber shock absorber, and its vibration that can isolated vehicle produces stand -by motor group during operation prevents that impact load from causing the influence to stand -by motor group to guarantee supplementary electric unit safety reliability service. The utility model discloses U type rubber shock absorber includes metal framework (1) and lower metal framework (2), go up metal framework and arrange metal framework's under top, it is bar -type texture with lower metal framework to go up metal framework, go up metal framework's the transversal type of falling U of personally submitting, lower metal framework's the transversal U type of personally submitting, go up metal framework and pass through rubber (3) bonding with lower metal framework, the top surface of going up metal framework is equipped with the screw hole, metal framework's bottom surface also is equipped with the screw hole down.
Description
Technical field
This utility model is related to a kind of vibration absorber, more particularly to a kind of vibration absorber for internal-combustion motor vehicle group.
Background technology
Stand-by motor group in internal-combustion motor vehicle group is typically mounted under vehicle body bottom frame, during EMUs high-speed cruising,
Vehicle brake and braking all can be acted on car body generation, vibrate car body, in addition, the abrasion of car wheel-set, track
Circuit irregularities etc. also can all cause body oscillating.At present the stand-by motor group of internal-combustion motor vehicle group by metal bolts by its
It is connected to vehicle body frame.This connected mode belongs to Hard link.Using metal bolts connect shortcoming be：Metal bolts are rigidity
Material, it does not have any damping effect to body oscillating and its percussion, and can be passed shock loading by metal bolts
Equipment under car is delivered to, causes car to divide into standby vibrated, percussion and cause potential safety hazard.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of U-shaped rubber shock absorber, and it can isolate vehicle operation
When to stand-by motor group produce vibration, prevent shock loading from impacting to stand-by motor group, so as to ensure stand-by motor group
Safe and reliable operation.
The U-shaped rubber shock absorber of this utility model, including upper metallic framework and lower metallic framework, the upper metallic framework arrangement
In the top of lower metallic framework, the upper metallic framework and lower metallic framework are strip structure, the horizontal stroke of the upper metallic framework
Section is in inverted U, and the cross section of the lower metallic framework is U-shaped, and the upper metallic framework is viscous by rubber with lower metallic framework
Connect, the top surface of the upper metallic framework is provided with screwed hole, and the bottom surface of the lower metallic framework also is provided with screwed hole.
The U-shaped rubber shock absorber of this utility model, wherein width of the width of the upper metallic framework less than lower metallic framework,
The upper metallic framework is located at the surface of lower metallic framework, and the rubber extends over supreme gold from the top surface of lower metallic framework
On the bottom surface of category skeleton and two opposite side surfaces.
The U-shaped rubber shock absorber of this utility model, wherein the rubber is provided with through hole, the through hole vertically metallic framework
Length direction arrangement.
The U-shaped rubber shock absorber of this utility model, wherein the through hole is long round tube hole, the through hole is set to 4.
The U-shaped rubber shock absorber of this utility model, wherein the bottom surface of the upper metallic framework is provided with the lower protruding block of strip, institute
The length direction that lower protruding block is stated along upper metallic framework arranges that the top surface of the lower metallic framework is provided with the upper protruding block of strip, institute
The length direction that upper protruding block is stated along lower metallic framework is arranged.
The U-shaped rubber shock absorber of this utility model, the structure wherein the upper metallic framework and lower protruding block are formed in one is described
Lower metallic framework and upper protruding block are also formed in one structure.
The U-shaped rubber shock absorber of this utility model, wherein the material of the upper metallic framework is Q235 steel, No. 45 steel or spheroidal graphite
Cast iron, the material of the lower metallic framework is Q235 steel, No. 45 steel or spheroidal graphite cast-iron.
The U-shaped rubber shock absorber of this utility model, wherein the upper scope of freedom of the rubber transversal is shaped as S-shaped batten song
Line.
The U-shaped rubber shock absorber difference from prior art of this utility model is the upper metallic framework in this utility model
Bonding by rubber between lower metallic framework, elastomeric material is incompressible section bar material, and its decrement is very big, therefore it compresses
Bearing capacity is very strong, and because the cross section of upper metallic framework is inverted U, the cross section of lower metallic framework is U-shaped, and this kind of structure is special
Point so that force way of the rubber when carrying is compression shear type, therefore with larger vertical bearing capacity, vibration isolating effect
Good, it can isolate the vibration produced to stand-by motor group when vehicle runs, and prevent shock loading from causing shadow to stand-by motor group
Ring, so as to ensure stand-by motor group safe and reliable operation.
Below in conjunction with the accompanying drawings the utility model is described in further detail.
Description of the drawings
Fig. 1 is the front view of the U-shaped rubber shock absorber of this utility model；
Fig. 2 is the top view of the U-shaped rubber shock absorber of this utility model；
Fig. 3 is the front view of the upper metallic framework in the U-shaped rubber shock absorber of this utility model；
Fig. 4 is the top view of the upper metallic framework in the U-shaped rubber shock absorber of this utility model；
Fig. 5 is the front view of the lower metallic framework in the U-shaped rubber shock absorber of this utility model；
Fig. 6 is the top view of the lower metallic framework in the U-shaped rubber shock absorber of this utility model；
Fig. 7 is the axonometric chart of the U-shaped rubber shock absorber of this utility model；
Fig. 8 is linear SDOF system illustraton of model；
Fig. 9 is the graph of a relation of vibration transmissibility and vibration ratio.
Specific embodiment
As shown in figure 1, and shown in reference picture 2-7, the U-shaped rubber shock absorber of this utility model include upper metallic framework 1 and under
Metallic framework 2, the upper metallic framework 1 is arranged in the top of lower metallic framework 2, the upper metallic framework 1 and lower metallic framework 2
Strip structure is, the cross section of the upper metallic framework 1 is in inverted U, and the cross section of the lower metallic framework 2 is U-shaped, described
Upper metallic framework 1 and lower metallic framework 2 are bonding by rubber 3, and the top surface of the upper metallic framework 1 is provided with screwed hole, it is described under
The bottom surface of metallic framework 2 also is provided with screwed hole.Separated by rubber 3 completely between upper metallic framework 1 and lower metallic framework 2, that is, go up,
Do not contact between lower metallic framework 1,2, the mode of the bonding of rubber 3 is bonding by Vulcanization.
The length of upper metallic framework 1 is 70 ㎜, and width is 60 ㎜.The length of lower metallic framework 2 is 70 ㎜, and width is 100
㎜.Up and down for equipment connection, its diameter is M16 to the screwed hole on metallic framework 1,2.
The U-shaped rubber shock absorber of this utility model, wherein width of the width of the upper metallic framework 1 less than lower metallic framework 2
Degree, the upper metallic framework 1 is located at the surface of lower metallic framework 2, and the rubber 3 covers from the top surface extension of lower metallic framework 2
Cover in bottom surface and the two opposite side surfaces of supreme metallic framework 1.
The U-shaped rubber shock absorber of this utility model, wherein the rubber 3 is provided with through hole 4, the vertically metal of the through hole 4
The length direction arrangement of skeleton 1,2.
The U-shaped rubber shock absorber of this utility model, wherein the through hole 4 is long round tube hole, the through hole 4 is set to 4.Pass through
The size and location of adjustment through hole 4 can adjust the rigidity of U-shaped rubber shock absorber, while through hole 4 provides the deformation space of rubber 3,
Be conducive to the stress distribution of rubber 3 uniform, improve the service life of U-shaped rubber shock absorber.
The U-shaped rubber shock absorber of this utility model, wherein the bottom surface of the upper metallic framework 1 is provided with the lower protruding block 5 of strip,
The lower protruding block 5 arranges that the top surface of the lower metallic framework 2 is provided with the convex of strip along the length direction of upper metallic framework 1
Block 6, the upper protruding block 6 is arranged along the length direction of lower metallic framework 2.
The U-shaped rubber shock absorber of this utility model, the structure wherein the upper metallic framework 1 and lower protruding block 5 are formed in one, institute
State lower metallic framework 2 and upper protruding block 6 to be also formed in one structure.The material of the upper metallic framework 1 be Q235 steel, No. 45 steel or
Spheroidal graphite cast-iron, the material of the lower metallic framework 2 is Q235 steel, No. 45 steel or spheroidal graphite cast-iron.
The U-shaped rubber shock absorber of this utility model, wherein the upper scope of freedom of the cross section of the rubber 3 is shaped as S-shaped batten song
Line, connects upper and lower metallic framework 1,2.
The vibration attenuation mechanism of the U-shaped rubber shock absorber of this utility model is as follows：
The vibration damping mechanical model of U-shaped rubber shock absorber can be reduced to single-degree-of-freedom linear damping-spring mass system, such as scheme
Shown in 8.
In Fig. 8, mass of system is m, rigidity is Kd, system damping coefficient is C；The linear list that U-shaped rubber shock absorber is constituted
Degree of freedom system, when system is supported exciting by the simple harmonic quantity of Ze=Z0ejwt, its equation of motion is represented by：
Substituting into above formula with u=z-ze can obtain：
In formula F (ω) be with excited frequency square and the base that changes shakes power amplitude.Solution formula (1-2) can obtain system
Relative displacement amplitude：
System vibration damping transport T can be obtained in the same manner is：
ω is extraneous excitation force frequency, ω in formulanFor system frequency, ξ is the damping ratio ξ=c/c of systemc；System
Natural frequency is：System critical damping：
With ξ as parameter, vibration transmissibility T compares f/f with frequencynRelation it is as shown in Figure 9.
It can be seen in figure 9 that only whenWhen, the vibration damping transport of system enters vibration damping less than 1, i.e. system
Area；Work as f/fnDuring ≈ 1, system is in resonance state.In engineering design, typically require that frequency ratio is located between 2.5～5.
Vibration damping region, with the reduction of damping ratio ξ, the effectiveness in vibration suppression of system is become better and better；But damping ratio is less, being total to during system resonance
The amplification that shakes is bigger, and this can endanger vehicle handling stability, or even cause body construction to be destroyed because resonance deformation is excessive.Cause
This, preferable vibroshock should make the natural frequency of system low, and with variable damping characteristic, i.e., in the resonance region of system
There is larger damping, make system not have significant resonance and amplify, and have less damping in vibration damping area, have system good
Effectiveness in vibration suppression, while shock resistance and stability will get well.
Bonding by rubber 3 between upper metallic framework 1 in this utility model and lower metallic framework 2, elastomeric material is not for
Compressible type material, its decrement is very big, therefore its compression bearing capacity is very strong, because the cross section of upper metallic framework 1 is U
Type, the cross section of lower metallic framework 2 is U-shaped, this kind of construction featuress so that force way of the rubber 3 when carrying is cut for compression
Cut type, therefore with larger vertical bearing capacity, vibration isolating effect is good, it can isolate when vehicle runs to the generation of stand-by motor group
Vibration, prevent shock loading from impacting to stand-by motor group, so as to ensure stand-by motor group safe and reliable operation.
Technique effect of the present utility model is as follows：
(1) vertical big bearing capacity.Elastomeric material is incompressible section bar material, and its modulus of compressibility is very big, therefore it compresses
Bearing capacity is very strong.The construction featuress of the U-shaped rubber shock absorber so that force way of the rubber when carrying is compression shear
Type, therefore with larger vertical bearing capacity.
(2) vibration isolating effect reaches 80%.Selected by the structure design to U-shaped rubber shock absorber and material so that internal combustion
Motor vehicles group motor oscillating efficiency of isolation reaches 80%.
(3) the vertical natural frequency of U-shaped rubber shock absorber is in 8-10-Hz, it is to avoid equipment natural frequency is consolidated with car body under car
There is frequency to stagger, it is to avoid equipment produces resonance when EMUs run under car, it is ensured that traffic safety.
Embodiment described above is only that preferred implementation of the present utility model is described, not to this practicality
New scope is defined, and on the premise of without departing from this utility model design spirit, those of ordinary skill in the art are to this
Various modifications and improvement that the technical scheme of utility model is made, all should fall into the protection of this utility model claims determination
In the range of.
Claims (8)
1. a kind of U-shaped rubber shock absorber, it is characterised in that：Including upper metallic framework (1) and lower metallic framework (2), the upper gold
Category skeleton is arranged in the top of lower metallic framework, and the upper metallic framework and lower metallic framework are strip structure, the upper gold
The cross section of category skeleton is in inverted U, and the cross section of the lower metallic framework is U-shaped, the upper metallic framework and lower metallic framework
By rubber (3) bonding, the top surface of the upper metallic framework is provided with screwed hole, and the bottom surface of the lower metallic framework also is provided with screw thread
Hole.
2. U-shaped rubber shock absorber according to claim 1, it is characterised in that：The width of the upper metallic framework (1) is less than
The width of lower metallic framework (2), the upper metallic framework is located at the surface of lower metallic framework, and the rubber (3) is from lower metal
The top surface of skeleton is extended in the bottom surface of supreme metallic framework and two opposite side surfaces.
3. U-shaped rubber shock absorber according to claim 2, it is characterised in that：The rubber (3) is provided with through hole (4), institute
State through hole vertically metallic framework (1,2) length direction arrangement.
4. U-shaped rubber shock absorber according to claim 3, it is characterised in that：The through hole (4) is long round tube hole, described
Through hole is set to 4.
5. U-shaped rubber shock absorber according to claim 4, it is characterised in that：The bottom surface of the upper metallic framework (1) is provided with
The lower protruding block (5) of strip, the lower protruding block along upper metallic framework length direction arrange, the top of the lower metallic framework (2)
Face is provided with the upper protruding block (6) of strip, and the upper protruding block is arranged along the length direction of lower metallic framework.
6. U-shaped rubber shock absorber according to claim 5, it is characterised in that：The upper metallic framework (1) and lower protruding block
(5) be formed in one structure, and the lower metallic framework (2) and upper protruding block (6) are also formed in one structure.
7. U-shaped rubber shock absorber according to claim 6, it is characterised in that：The material of the upper metallic framework (1) is
Q235 steel, No. 45 steel or spheroidal graphite cast-iron, the material of the lower metallic framework (2) is Q235 steel, No. 45 steel or spheroidal graphite cast-iron.
8. U-shaped rubber shock absorber according to claim 7, it is characterised in that：The upper scope of freedom of rubber (3) cross section
It is shaped as S-shaped SPL.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143684.1U CN206129957U (en) | 2016-10-21 | 2016-10-21 | U type rubber shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621143684.1U CN206129957U (en) | 2016-10-21 | 2016-10-21 | U type rubber shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206129957U true CN206129957U (en) | 2017-04-26 |
Family
ID=58574040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621143684.1U Active CN206129957U (en) | 2016-10-21 | 2016-10-21 | U type rubber shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206129957U (en) |
-
2016
- 2016-10-21 CN CN201621143684.1U patent/CN206129957U/en active Active
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