CN219242545U - Variable-rigidity shock absorber and shock absorption assembly - Google Patents

Abstract

The application provides a shock absorber and damping assembly of variable rigidity, the shock absorber include first damping body and encircle in the second damping body of first damping body periphery, have the connector between first damping body and the second damping body, first damping body and second damping body pass through the connector and connect, and the connector has first deformation space, and first damping body has the damping side, has the second deformation space between the roof of damping side and second damping body. The deformation of the second vibration reduction body is released through the first deformation space, so that the tearing effect caused by the deformation is reduced, and the vibration reduction performance of the vibration absorber is ensured; the top wall of the second vibration reduction body is higher than the top wall of the first vibration reduction body, when the second vibration reduction body receives larger impact, the axial deformation of the second vibration reduction body is resisted by the first vibration reduction body and the connecting body, the top wall of the first vibration reduction body in the vertical direction is close to the top wall of the first vibration reduction body, the rigidity is increased when the second vibration reduction body deforms, and the second vibration reduction body is abutted with the first vibration reduction body at the same time, so that the reliability of the vibration reduction device is improved.

Description

Variable-rigidity shock absorber and shock absorption assembly

Technical Field

The application relates to the technical field of engines, in particular to a variable-rigidity shock absorber and a shock absorption assembly.

Background

Vibration isolation and shock protection designs of the engine and parts are important parts to ensure reliable operation of the powertrain system or parts, and the application of the shock absorber to the powertrain system and parts (e.g., aftertreatment systems mounted on the engine block) is common and necessary, with the rubber-based shock absorbing pads being most widely used.

However, for engineering machinery vehicles such as bulldozers, excavators, loaders, etc., the complexity and severity of the use environment of the suspension system results in the suspension system bearing more and more low frequency impact loads, which puts higher demands on the damping performance and reliability of the suspension structure, i.e. the damping capability of the damper under different use environments and different vibration amplitudes. Most of the prior art vibration dampers are directly arranged at the vibration-damped parts by bolts so as to reduce vibration, but in order to ensure that a post-treatment system of engineering machinery vehicles has higher reliability under complex and severe working condition environments, only the vibration damping performance can be sacrificed, and the rigidity of the vibration damping pad is improved. However, the reduction of the vibration damping performance brings about deterioration of the vibration of the protected structure and reduction of the service life.

In this regard, some prior art begin to adopt a variable stiffness damper, and up-and-down movement of the damper body is realized by arranging a lifting mechanism and an auxiliary spring, so that the damper body moves to different working areas to cope with different working conditions; however, the shock absorber in the prior art is excessively complex in structure, needs to be realized by adopting a large number of structures such as a cylinder, a piston and a spring, and needs to be greatly modified, so that the shock absorber is complex in structure, large in displacement and occupies a large amount of working space, and the cost is greatly increased.

Accordingly, there is a need for further improvements and enhancements in the art.

Disclosure of Invention

The application provides a shock absorber and damping subassembly of variable rigidity to the shock absorber structure among the solution prior art is complicated, is difficult to guarantee damping capacity under different operating modes, and needs to change the problem of shock absorber original material and structure.

The technical scheme adopted by the application is as follows:

the application provides a variable rigidity's shock absorber, the shock absorber include first damping body and encircle in the second damping body of first damping body periphery, have the connector between first damping body and the second damping body, first damping body and second damping body pass through the connector and connect, and the connector has first deformation space, and first damping body has the damping side, has the second deformation space between the roof of damping side and second damping body.

As a preferred embodiment of the present application, the plurality of connection bodies are arranged at intervals along the circumferential direction of the first vibration reduction body, and a third deformation space is formed between two adjacent connection bodies.

As a preferred embodiment of the present application, the connecting body and the first vibration-damping body are integrally formed and are disposed on the outer wall of the first vibration-damping body; or the connecting body and the second vibration reduction body are integrally formed and are arranged on the inner wall of the second vibration reduction body.

As a preferred embodiment of the present application, the connecting body comprises a plurality of connecting blocks, wherein the plurality of connecting blocks are uniformly distributed, and a first deformation space is formed between two adjacent connecting blocks.

As a preferred embodiment of the present application, the first vibration damping body has a stiffness of k2 and the second vibration damping body has a stiffness of k1, wherein k2 is equal to or greater than 10 x k1.

As a preferred embodiment of the present application, the damper is provided with a positioning portion protruding from the bottom wall of the first damper body, and a fixing hole penetrating the positioning portion.

As a preferred embodiment of the present application, a transition section is provided between the top walls of the first and second vibration damping bodies, the diameter of the transition section being larger than the diameter of the first vibration damping body.

The application also provides a damping assembly, damping assembly include the shock absorber to and bearing structure, and the shock absorber symmetry sets up in bearing structure's both sides, and the damping side of first damping body deviates from mutually, and the shock absorber includes the location portion of protrusion second damping body diapire to and the fixed orifices that runs through location portion.

As a preferred embodiment of the present application, the support structure is provided with a positioning hole, the positioning part is placed in the positioning hole and is in clearance fit with the positioning hole, and the positioning hole and the fixing hole form a fixing channel.

As a preferred embodiment of the present application, the vibration damping assembly further includes a protection member including an insertion portion and a support portion, the insertion portion being disposed in the fixed channel, the support portion being configured to support one of the two vibration dampers, the other of the two vibration dampers being abutted against the body to be damped.

Due to the adoption of the technical scheme, the technical effects obtained by the application are as follows:

1. according to the vibration reduction device, vibration reduction work is carried out under the common working condition through the second vibration reduction body, stable operation is guaranteed to a great extent, when the second vibration reduction body is subjected to extrusion deformation due to low-frequency high impact, the deformed part can enter the first deformation space, deformation of the second vibration reduction body is released, tearing effect caused by deformation is reduced, and vibration reduction performance of the vibration reduction device is guaranteed under the low-frequency high impact; the first vibration reduction body is provided with a vibration reduction side, a second deformation space is formed between the vibration reduction side and the top wall of the second vibration reduction body, so that when the vibration reduction device works under severe working conditions, the second vibration reduction body is compressed due to the extrusion of the vibration reduction body, the second vibration reduction body is deformed in the axial direction by the first vibration reduction body and the connecting body, the second vibration reduction body can be deformed in a compression mode towards the vertical direction and is close to the top wall of the first vibration reduction body and dispersed in the second deformation space until the second vibration reduction body is flush with the top wall of the first vibration reduction body, the vibration reduction body is simultaneously abutted to the first vibration reduction body through the increase of the rigidity when the second vibration reduction body is deformed, further deformation of the vibration reduction device is prevented, the reliability of the vibration reduction device is improved, that is, when the vibration reduction device vibrates relatively low by the first vibration reduction body, and when the vibration is relatively large, the vibration reduction device is used for improving the reliability of the vibration reduction device through the rigidity, and the vibration reduction device is suitable for different working conditions and has low vibration reduction cost.

2. As a preferred embodiment of the present application, the connecting body of the present application is provided with a plurality of connecting bodies, and a third deformation space is formed between two adjacent connecting bodies, so that abrupt change of the second vibration damping body can be further prevented, compression deformation of the second vibration damping body can be further released, and tearing effect caused by deformation can be reduced. In addition, the connector is through with first damping body integrated into one piece, perhaps with second damping body integrated into one piece, can be convenient for process and production to the shock absorber, save processing cost to through integrated into one piece's structure, set up the connector and include a plurality of connecting blocks, and form first deformation space between the adjacent connecting block, realize the vertical interval in first deformation space and the horizontal interval in second deformation space through the simple structure of connector and cooperate the damping.

3. As a preferred embodiment of the present application, the stiffness k1 of the second vibration-damping body is smaller than the stiffness k2 of the first vibration-damping body by setting the material hardness of the first vibration-damping body and the material hardness of the second vibration-damping body to be different, so that when the second vibration-damping body deforms due to vibration, the deformation is transferred to the first vibration-damping body with higher stiffness to resist the deformation of the second vibration-damping body, thereby improving the deformation resistance of the whole vibration-damping body, and the deformation of the second vibration-damping body can move to the second deformation space, namely, the top of the first vibration-damping body, so that the top wall of the second vibration-damping body approaches the first vibration-damping body under the working condition of larger vibration, thereby enabling the first vibration-damping body and the second vibration-damping body to jointly damp the vibration-damping body, and improving the stiffness through the deformation, thereby improving the whole reliability.

4. The application still provides a damping subassembly, through setting up the shock absorber symmetry setting in bearing structure's both sides for by the damping body, the shock absorber, bearing structure and another shock absorber stack the setting, can improve the damping effect, and, the shock absorber sets up in bearing structure's both sides, can also carry out buffering and damping through the shock absorber when upwards and downward transmission with bearing structure department's vibration, with this further improvement damping effect.

5. As a preferred embodiment of this application, the bearing structure of this application is provided with the locating hole, through the cooperation of locating part and locating hole, can carry out axial positioning to the shock absorber through the protruding structure of locating part to can prevent to a great extent that locating part and bearing structure direct contact through the clearance cooperation of locating hole and locating part, improve radial shock-absorbing capacity. In addition, this application still is provided with the protection piece, and the protection piece includes insert portion and supporting part, and the supporting part of protection piece can play the effect of supporting the shock absorber, and the assembly of the whole structure of being convenient for, the setting of insert portion can play certain guard action to the internal fixed channel of first shock absorber, can improve the hardness of the fixed orifices of first shock absorber, prevents that retaining member direct insertion first shock absorber from causing the damage to it.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the present application and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of a shock absorber according to one embodiment of the present application;

FIG. 2 is a schematic diagram of an exploded construction of a shock absorber in one embodiment provided herein;

FIG. 3 is a schematic cross-sectional view of a shock absorber according to one embodiment of the present application;

fig. 4 is a schematic cross-sectional view of a shock absorbing assembly according to one embodiment of the present application.

Reference numerals:

1-a first vibration-damping body; 2-a second vibration absorber; 21-transition section; a 3-linker; 31-connecting blocks; 4-a body to be damped; 5-a first deformation space; 51-a second deformation space; 6-a third deformation space; 7-a positioning part; 8-a support structure; 9-a protector; 91-an insertion portion; 92-a support; 93-locking member; 94-fasteners.

Detailed Description

In order to more clearly illustrate the general concepts of the present application, a detailed description is provided below by way of example in connection with the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced otherwise than as described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "bottom," "inner," "outer," etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description of the present application and to simplify the description, rather than to indicate or imply that the apparatus or element in question must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting the present application.

In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 4, the present application provides a damper of variable rigidity, which includes a first damper body 1 and a second damper body 2 surrounding the outer periphery of the first damper body 1, a connecting body 3 is provided between the first damper body 1 and the second damper body 2, the first damper body 1 and the second damper body 2 are connected by the connecting body 3, the connecting body 3 has a first deformation space 5, the first damper body 1 has a damper side, and a second deformation space 51 is provided between the damper side and the top wall of the second damper body 2.

Specifically, when the working condition where the vibration-damped body 4 is located is stable, the vibration at the vibration-damped body 4 is lower, the vibration can be transmitted to the vibration damper, at this time, the second vibration-damped body 2 can deform due to extrusion or vibration, and due to the fact that the vibration is lower, the deformation is smaller, deformed parts can enter the first deformation space 5, deformation of the second vibration-damped body 2 is released, tearing effect caused by deformation is reduced, and vibration damping performance of the vibration damper is guaranteed under low impact.

Further, the damper is under a more complicated and severe working condition, at this time, the second damper body 2 will continue to deform due to larger vibration or extrusion, at this time, due to the release of the deformation by the first deformation space 5 and the resistance of the first damper body 1, the axial deformation of the second damper body 2 is resisted, and deformation occurs to the second deformation space 51 after the second damper body 2 is extruded, so that the top wall of the first damper body 1 and the top wall of the second damper body 2 are gradually close, the damper body 4 is abutted together by the first damper body 1 and the second damper body 2, and the rigidity of the damper is increased due to the deformation of the second damper body 2, so that the overall stability and reliability of the damper are improved.

That is, the present application uses the second vibration damping body 2 as the main vibration damping body under the normal working condition and the complex and severe working condition to perform vibration damping operation, uses the first vibration damping body 1 as the auxiliary vibration damping body to cooperate with the second vibration damping body to improve the vibration damping effect and reliability of the vibration damper, and resists the deformation of the second vibration damping body 2 through the first vibration damping body 1 and the connecting body 3.

Wherein, as shown in fig. 2, the connector 3 is provided with a plurality of, and a plurality of connectors can be for circumference even interval layout, form third deformation space 6 between the adjacent connector 3 for the size in third deformation space 6 is the same, makes the damping effect more steady. The arrangement mode of the connecting body 3 is not particularly limited, that is, the connecting body 3 and the first vibration reduction body 1 can be in an integrally formed structure and arranged on the outer wall of the first vibration reduction body 1; the connection body 3 and the second vibration damping body 2 may be integrally formed, and may be provided on the inner wall of the second vibration damping body.

Further, as shown in fig. 1, 2 and 3, in order to facilitate description of the subsequent structure, the present application will be described with a structure in which the connecting body 3 and the first vibration reduction body 1 are integrally formed, and due to the arrangement of the integral forming, the connecting body 3 may include a plurality of connecting blocks 31, and the plurality of connecting blocks 31 may be uniformly arranged in the vertical direction, or may be uniformly arranged in a ring shape, and the first deformation space 5 is formed between the adjacent connecting blocks 31.

That is, the present application prevents abrupt change of the second vibration damping body 2 through the first deformation space 5, the second deformation space 51 and the third deformation space 6, further releases compression deformation of the second vibration damping body 2, and reduces tearing effect due to deformation. In addition, the connector 3 is formed integrally with the first vibration damper 1 or with the second vibration damper 2, so that the vibration damper can be conveniently processed and produced, processing cost is saved, the connector 3 comprises a plurality of connecting blocks 31 and forms a first deformation space 5 through adjacent connecting blocks 31 through an integrally formed structure, and the vertical interval of the first deformation space 5 and the transverse interval of the third deformation space 6 are matched for vibration damping through the simple structure of the connector 3.

Further, as shown in fig. 3, a transition section 21 is disposed between the top walls of the first vibration reduction body 1 and the second vibration reduction body 2, the diameter of the transition section 21 is larger than that of the first vibration reduction body 1, as shown in fig. 3, the transition section 21 is a chamfer extending from the top wall of the first vibration reduction body 1 to the top wall of the second vibration reduction body 2, so that when the working condition is complex and the vibration environment is poor, the second vibration reduction body 2 deforms towards the first deformation space 5, the tearing effect of deformation is further slowed down through the arrangement of the transition section 21, and the deformation position of the second vibration reduction body 2 can be guided towards the first vibration reduction body 1 along the transition section 21, so that the contact area between the deformation position and the vibration reduction body 4 can be increased, the gap between the first vibration reduction body 1 and the second vibration reduction body 2 can be reduced, and the reliability and stability of the vibration reduction device can be further improved.

As a preferred embodiment of the present application, the rigidity of the first vibration-damping body 1 is k2, the rigidity of the second vibration-damping body 2 is k1, and the rigidity relationship between the two is that k2 is equal to or greater than 10×k1, so that the rigidity k1 of the second vibration-damping body 2 is smaller than the rigidity k2 of the first vibration-damping body 1, when the second vibration-damping body 2 deforms due to vibration, deformation can be transmitted to the first vibration-damping body 1 with higher rigidity, so as to resist the deformation of the first vibration-damping body 1, thereby improving the deformation resistance of the whole vibration-damping body, enabling the deformation of the second vibration-damping body 2 to compress and move along the vertical direction, and enabling the top wall of the second vibration-damping body 2 to approach the top wall of the first vibration-damping body 1 under the working condition of larger vibration, so that the first vibration-damping body 1 and the second vibration-damping body 2 jointly damp the vibration-damping body 4, and the rigidity can be improved through deformation, and the whole reliability can be improved.

It can be understood that the first vibration damping body 1, the second vibration damping body 2 and the connecting body 3 are made of rubber materials, but the hardness is different, so that the main vibration damping operation is performed through the second vibration damping body 2 with lower hardness and better vibration damping effect, and the protection and the resisting operation are performed through the first vibration damping body 1 with higher hardness. That is, the materials of the first vibration damping body 1 and the second vibration damping body 2 are not changed, that is, the materials of the first vibration damping body 1 and the second vibration damping body 2 can adopt the most conventional rubber vibration damping bodies to perform vibration damping operation, so that the processing cost is low, and the assembly is simpler.

Furthermore, the first vibration damping body 1 and the second vibration damping body 2 are provided with a certain distance therebetween, the rigidity k2 and the height h2 of the first vibration damping body 1 are determined by determining the rigidity k1 of the second vibration damping body 2 and the height h1 of the second vibration damping body 2, and based on a measurable or known constant quantity, namely, the gravitational acceleration g; an impact resistance coefficient gamma; acceleration root mean square value a0 of the weight due to engine excitation or road surface excitation under the common working condition; the dynamic and static stiffness ratio alpha, the static vibration reduction pad deformation beta generated by the bolt pretightening force is calculated by the formula: δ= (mg+γma0)/(α×k1) +β to determine the height difference δ of the first vibration damping body 1 and the second vibration damping body 2, thereby completing the processing and assembly of the first vibration damping body 1 and the second vibration damping body 2.

As shown in fig. 2 and 3, as a preferred embodiment of the present application, the rubber vibration damping body is provided with a positioning portion 7 protruding from the bottom wall of the first vibration damping body 2 and a fixing hole penetrating the positioning portion 7 and the center position of the first vibration damping body 1. To position the main vibration damping by the positioning portion 7 and to enable an improvement in radial vibration damping capability.

As shown in fig. 4, the present application further provides a vibration damping assembly, which includes a vibration damper and a supporting structure 8, the vibration damper is symmetrically disposed on two sides of the supporting structure 8, and the vibration damping sides of the first vibration damper body 1 are deviated.

It can be understood that, for the arrangement of the damper and the supporting structure 8, the damper may be arranged at two sides of the body 4 to be damped, that is, the damper, the supporting mechanism and the body 4 to be damped are arranged in a stacked arrangement, so that the damping effect can be improved; in order to be convenient for describe subsequent structure, this application describes taking the setting mode that the shock absorber set up in the both sides of supporting mechanism to, the shock absorber sets up in the both sides of supporting structure 8, can also come upwards and downward transmission with the vibration of supporting structure 8 department through the shock absorber, further improves the damping effect.

Further, as shown in fig. 4, the supporting structure 8 is provided with a positioning hole, in which the positioning portion 7 is disposed, it is understood that the diameter of the positioning portion 7 may be smaller than that of the first vibration damping body 1, and is in clearance fit with the positioning hole, and the positioning hole and the fixing hole form a fixing channel. Alternatively, the positioning portion 7 and the positioning hole may be in clearance fit, so that the damper can be axially positioned by the protruding structure of the positioning portion 7, and the positioning portion 7 and the supporting structure 8 of the house can be directly contacted to a large extent by clearance fit of the positioning hole and the positioning portion 7, so as to improve the radial damping capability.

In addition, as shown in fig. 4, the vibration damping assembly further includes a protector 9, the protector 9 includes an insertion portion 91 and a supporting portion 92, the insertion portion 91 is disposed in the fixed channel, the supporting portion 92 is used for supporting one of the two vibration dampers, and the other of the two vibration dampers is abutted against the vibration damped body 4. Alternatively, the insertion portion 91 and the supporting portion 92 may be integrally formed, so as to facilitate the processing of the protection member 9 and simplify the disassembly and assembly process.

This application can play the effect of support to the shock absorber through the supporting part 92 of protection piece 9, and the assembly of the whole structure of being convenient for, the setting of inserting part 91 can play certain guard action to the inside fixed channel of main damping, can improve the hardness of first damping body 1 fixed orifices, prevents retaining member 93 direct insertion first damping body and causes the damage to it.

As a preferred embodiment of the present application, the vibration damping assembly further comprises a locking member 93 and a fastening member 94, wherein the locking member 93 penetrates the protector 9 and the vibration damped body 4, and the locking member 93 is positioned by the fastening member 94.

Alternatively, the locking member 93 and the fastener 94 may be provided as bolts and nuts to simplify the overall structure and facilitate the assembly and disassembly of the vibration reduction assembly.

The non-mentioned places in the application can be realized by adopting or referring to the prior art.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims (10)

1. The utility model provides a variable rigidity's shock absorber, its characterized in that, the shock absorber include first damping body and encircle in the second damping body of first damping body periphery, first damping body with have the connector between the second damping body, first damping body with the second damping body passes through the connector is connected, the connector has first deformation space, first damping body has the damping side, damping side with have the second deformation space between the roof of second damping body.

2. The variable stiffness vibration absorber of claim 1 wherein said plurality of connectors are circumferentially spaced about said first vibration absorber, and wherein a third deformation space is provided between adjacent ones of said connectors.

3. The variable stiffness vibration absorber of claim 2 wherein said connector is of unitary construction with said first vibration absorber and is disposed on an outer wall of said first vibration absorber; or the connecting body and the second vibration reduction body are of an integrally formed structure and are arranged on the inner wall of the second vibration reduction body.

4. The variable stiffness vibration damper of claim 1 wherein said connector includes a plurality of connector blocks, said plurality of connector blocks being uniformly arranged, adjacent ones of said connector blocks defining said first deformation space therebetween.

5. A variable stiffness vibration absorber according to claim 1 wherein said first vibration dampening body has a stiffness of k2 and said second vibration dampening body has a stiffness of k1, wherein k2 is greater than or equal to 10 x k1.

6. A variable stiffness vibration damper according to claim 1, wherein the vibration damper is provided with a positioning portion protruding from a bottom wall of the first vibration damper body, and a fixing hole penetrating the positioning portion.

7. A variable stiffness vibration damper as claimed in claim 1 wherein a transition section is provided between the top walls of the first and second vibration damping bodies, the transition section having a diameter greater than the diameter of the first vibration damping body.

8. A vibration damping assembly, characterized in that the vibration damping assembly comprises a vibration damper according to any one of claims 1-7 and a supporting structure, wherein the vibration dampers are symmetrically arranged on two sides of the supporting structure, the vibration damping sides of the first vibration damping body are away from each other, and the vibration damper comprises a positioning part protruding out of the bottom wall of the first vibration damping body and a fixing hole penetrating through the positioning part.

9. A vibration damping assembly according to claim 8, wherein the support structure is provided with a locating hole, the locating portion being disposed in the locating hole and being in clearance fit with the locating hole, the locating hole and the fixing hole forming a fixing channel.

10. A vibration damper assembly according to claim 9, further comprising a protector member including an insert portion disposed in the fixed passage and a support portion for supporting one of the two vibration dampers, the other of the two vibration dampers being in abutment with the body to be damped.

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