CN105277377A - Dynamic force transmission device having two degrees of freedom - Google Patents
Dynamic force transmission device having two degrees of freedom Download PDFInfo
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- CN105277377A CN105277377A CN201410308927.1A CN201410308927A CN105277377A CN 105277377 A CN105277377 A CN 105277377A CN 201410308927 A CN201410308927 A CN 201410308927A CN 105277377 A CN105277377 A CN 105277377A
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- pedestal
- slide block
- cover plate
- freedom
- dynamic force
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Abstract
The invention belongs to the automobile suspension assembly test field, and especially relates to a dynamic force transmission device having two degrees of freedom. A technical scheme is characterized in that: a plurality of independent cavities are formed in a pedestal (3); a cover plate (2) is installed on the pedestal (3) and is buckled with the pedestal (3); a through groove is formed in the cover plate (2) at a position corresponding to each independent cavity of the pedestal (3), and the through groove is used for installing a slide block (4); a horizontal portion of each slide block (4) is located in the pedestal (3), and a vertical portion passes through the corresponding through groove of the cover plate (2) and is connected to a tray (1); and two side surfaces of each slide block (4) are symmetrically provided with a group of elastic assemblies (6). The dynamic force transmission device has the beneficial effects that the dynamic force transmission device has degrees of freedom in two directions; a hydraulic oil film high rigidity principle is adopted for transmiting a dynamic force, and the dynamic force transmission device has the high rigidity in a force transmission direction and is suitable for high frequency and large load force transmission; a X-direction rectilinear motion friction force is small so that oil temperature control is convenient and the device can be used for a long time; and a contraposition disk spring pre-compaction mode is adopted to realize Y-direction constraint so that a Y-direction lateral force can be resisted.
Description
Technical field
The invention belongs to automotive suspension assembly test field, be specifically related to a kind of dynamic force transfer device with two-freedom.
Background technology
Suspension is one of important assembly of automobile, it is flexibly linked together vehicle frame and axletree, not only transmits all force and moments between wheel and axletree, and relaxes the shock load being passed to vehicle frame by uneven road surface, the vibration of decay bearing system, to ensure that automotive safety smoothly travels.An independent suspension generally includes hydro-pneumatic spring, damper and wheel etc., in its development flow process, the performance of the performance of the assemblies such as independent examination hydro-pneumatic spring, damper or wheel not can completely reflection suspension assembly, therefore, carrying out verification experimental verification to suspension assembly is very necessary link.
Suspension assembly test can to the integrally-built fatigue strength of suspension band tire, between tire force and hydro-pneumatic spring displacement quiet/transitive relation etc. of dynamic stiffness and tire force and hydro-pneumatic spring 10 loading force examines or verifies, as shown in Figure 1.When suspension assembly carries out bulk testing, need to carry out structural constraint to it, simulate the working environment of its reality, usually after completing installation, the tire of suspension assembly is limited around the rotary motion of itself axis, but whole suspension system still has the rotational freedom that is rotation center with transverse arm 12.Adopt actuator 14 exciting bank, utilize a supporting plate 13 to simulate ground, to the excitation of tire 11 vertical direction, simulated suspension system is in the working condition of road traveling process.Because, suspension assembly has a rotary freedom after mounting, when after the excitation of tire 11 plate 13, with supporting plate 13 vertically (Z-direction) process of moving, the inevitable displacement along with a transverse direction (X to), cause the relative sliding of tire 11 plate 13, and side force passed to actuator 14 by supporting plate 13 and affect actuator 14 and use, cause the shortening in actuator 14 life-span.For avoiding this type of circumstances from happening, existing test unit adopts the mode of linear bearing, make supporting plate 13 have X to degree of freedom, to eliminate the side force transmission of supporting plate 13 and actuator 14.Meanwhile, testing requirements load is passed to supporting plate 13 by linear bearing.But traditional line bearing often exists gap, there is wretched insufficiency as force transfering device to solve degree of freedom release And Spread of Solute in dynamic test process: 1. dynamic force transmits distortion, cannot realize the accurate transmission of testing requirements load; 2. transmitting force is limited, need adopt comparatively macrostructure when needs transmit larger load.For prior art Problems existing, need to provide a kind of dynamic force transfer device with two-freedom, this device of suspension tire 11 can realize and the moving along Z-direction of actuator 14, meanwhile, its X to motion because the relative sliding of supporting plate 13 with pedestal is achieved.
Summary of the invention
The object of the invention is to for prior art Problems existing, a kind of dynamic force transfer device with two-freedom is provided, this device obtains Z-direction freedom of motion by actuator, obtain X to degree of freedom by the relative sliding between pallet and pedestal, realize the transmission of dynamic force based on hydraulic pressure oil film height Rigidity Theory.
The technical scheme realizing the object of the invention is as follows:
There is a dynamic force transfer device for two-freedom, comprise pallet 1, cover plate 2, pedestal 3, slide block 4, way block 5 and elastic parts 6; The inside of pedestal 3 has multiple separate chamber, and for installing slide block 4, way block 5 and elastic parts 6, the shape of the shape of each chamber and slide block 4, way block 5 and elastic parts 6 closely cooperates; Cover plate 2 closes with the matching form of pedestal 3, is arranged on pedestal 3, fastens with pedestal 3; The cover plate 2 that each separate chamber of pedestal 3 is corresponding respectively has 1 groove, and for installing slide block 4, slide block 4 can move forwards, backwards along X in groove; Pallet 1 is positioned at above cover plate 2, and the shape of pallet 1 is slab construction or curved-surface structure, and the lower surface of pallet 1 is plane;
In each separate chamber of pedestal 3, slide block 4 is installed; Slide block 4 is " ⊥ " shape, comprises horizontal component and vertical component; The horizontal component of slide block 4 is positioned at the separate chamber of pedestal 3, and vertical component is through the groove of cover plate 2, and be connected on pallet 1, slide block 4 can move in the groove of cover plate 2; Slide block 4 two sides symmetry installs one group of elastic parts 6.
Described slide block 4 and adopt oil film supporting way to reduce friction between cover plate 2 and pedestal 3, and transmit dynamic load.
Described slide block 4 and form laterally zygomorphic 4 slightly wide spaces between cover plate 2 and pedestal 3 as oil pocket 8, the space of oil pocket 8 both sides is narrower, as sealing oil edge 9, passes into hydraulic oil and form 4 lubricating pads in oil pocket 8.Each lubricating pad comprises oil pocket 8 and is positioned at the sealing oil edge 9 of oil pocket both sides, and oil pocket 8 inside holds the fluid of certain volume.
The junction of described each oil circuit duct or oil circuit and oil pocket 8 is provided with flow controller 7, for carrying out throttling control to hydraulic oil.
Described elastic parts 6 is common spring or dished spring assembly.
A way block 5 is also respectively provided with between described each slide block 4 and elastic parts 6.
Beneficial effect of the present invention is:
This device has degree of freedom in both direction, namely dynamic force direction of transfer Z-direction and the direction X vertical with Z-direction to; Adopt hydraulic pressure oil film height Rigidity Theory to transmit dynamic force, whole device has very high rigidity at power transmitting (i.e. Z-direction), the transmission of suitable upper frequency, large-load force; X is solid-liquid friction to rectilinear motion pair, and friction force is very little, and liquid constantly circulates, and is convenient to Oil-temperature control, suitable long-time use; Adopt the mode of opposed disc spring pre-pressing to realize the constraint of Y-direction (with X, Z-direction is vertical) rectilinear motion pair, make package unit have the ability of opposing Y-direction side force.
Accompanying drawing explanation
Fig. 1 is background technology schematic diagram of the present invention;
Fig. 2 is structural representation of the present invention;
Fig. 3 is the structural representation of pedestal in Fig. 2, cover plate;
Fig. 4 is single chamber cut-open view of Fig. 3 cover plate and pedestal;
Fig. 5 is the partial enlarged drawing of I part in Fig. 4;
Fig. 6 is the partial enlarged drawing of II part in Fig. 4;
Fig. 7 is the dual cavity cut-open view of Fig. 3 cover plate and pedestal;
In figure:
1-pallet, 2-cover plate, 3-pedestal, 4-slide block, 5-way block, 6-elastic parts, 7-flow controller, 8-oil pocket, 9-sealing oil edge, 10-hydro-pneumatic spring, 11-tire, 12-transverse arm, 13-supporting plate, 14-actuator.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described.
Present embodiments provide a kind of dynamic force transfer device with two-freedom, its structure as shown in Figures 2 and 3, comprises pallet 1, cover plate 2, pedestal 3, slide block 4, way block 5 and elastic parts 6.The inside of pedestal 3 has three separate chamber, and for installing slide block 4, way block 5 and elastic parts 6, the shape of the shape of each chamber and slide block 4, way block 5 and elastic parts 6 closely cooperates; In the present embodiment, for coordinating the installation site of three slide blocks 4 and designing the requirements such as succinct, attractive in appearance, the shape of pedestal 3 entirety is " T " font with reinforcement, but the shape of pedestal 3 can adjust according to actual needs.
Cover plate 2 closes with the matching form of pedestal 3, is arranged on pedestal 3, fastens with pedestal 3.The cover plate 2 that each separate chamber of pedestal 3 is corresponding respectively has 1 strip groove, and for installing slide block 4, slide block 4 can move forwards, backwards along X in strip groove.
Pallet 1 is positioned at above cover plate 2, and the shape of pallet 1 can adopt slab construction or curved-surface structure as required, and to facilitate and the connecting of tire or other test specimens, the lower surface of pallet 1 is plane.
In each separate chamber of pedestal 3, be provided with slide block 4, its installation site as shown in figs. 4 and 7.Slide block 4 is " ⊥ " shape, comprises horizontal component and vertical component; The horizontal component of slide block 4 is positioned at the separate chamber of pedestal 3, and vertical component, through the strip groove of cover plate 2, is bolted on pallet 1.Slide block 4 can move in the strip groove of cover plate 2, thus drives pallet 1 to be free to slide in X direction.Slide block 4 support tray 1, adopts three slide block 4 design forms in the present embodiment, also can adopt 2 or more slide block 4 supporting forms.Equally, the separate chamber quantity of pedestal 3 inside is identical with the quantity of slide block 4, and when the quantity of slide block 4 changes, separate chamber quantity and the global shape of pedestal 3 inside change thereupon.
As shown in Figure 4 and Figure 5, slide block 4 and adopt oil film supporting way to reduce friction between cover plate 2 and pedestal 3, and transmit dynamic load.Slide block 4 and form laterally zygomorphic 4 slightly wide spaces between cover plate 2 and pedestal 3 as oil pocket 8, the space of oil pocket 8 both sides is narrower, as sealing oil edge 9, passes into hydraulic oil and form 4 lubricating pads in oil pocket 8.Each lubricating pad comprises oil pocket 8 and is positioned at the sealing oil edge 9 of oil pocket both sides.Oil pocket 8 inside holds the fluid of certain volume, controls oil liquid pressure size, can realize the control of slide block 4 power output.Hydraulic oil enters oil pocket 8 by cover plate 2 and the oil circuit duct of pedestal 3 inside or the mode of external oil circuit; Lubricating pad sealing oil edge 9 has certain interval, and fluid flows out in oil pocket 8 by sealing oil edge 9.For regulating lubricating pad inner fluid pressure, be provided with flow controller 7, for carrying out throttling control to hydraulic oil in the junction of each oil circuit duct or oil circuit and oil pocket 8.Flow controller 7 and sealing oil edge 9 all play liquid resistance.
As shown in Figure 4, Figure 5 and Figure 6, slide block 4 two sides symmetry installs one group of elastic parts 6.Slide block 4, under the pre-pressing of opposed elastic parts 6, is in dynamic balance state in the Y direction, and this direction degree of freedom suffers restraints.Elastic parts 6 can be ball spring or dished spring assembly, and dished spring assembly comprises 6-1 disc spring pedestal; 6-2 disc spring; 6-3 disc spring lid.A way block 5 is also respectively provided with between each slide block 4 and elastic parts 6.The effect of way block 5 is the sliding friction between elastic parts 4 and slide block 5 to become rolling friction.The quantity of way block 5 can be selected as required, monolateral 1 piece and above all can, determine to range of movement according to X.The quantity of elastic parts 6 is determined according to Y-direction load bearing requirements.
The present invention proposes a kind of dynamic force transfer device with two-freedom, and its advantage is, suspension tire can realize along Z-direction move consistent with actuator by this device, and meanwhile, its X is to moving because the relative sliding of pallet and pedestal is achieved.Along the active load of Z-direction by slide block and the oil film transmission between matrix and cover plate, because oil film has very high rigidity, this device is suitable for the transmission of upper frequency, large-load force.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.If these amendments and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. there is a dynamic force transfer device for two-freedom, it is characterized in that: comprise pallet (1), cover plate (2), pedestal (3), slide block (4) and elastic parts (6); The inside of pedestal (3) has multiple separate chamber, and for installing slide block (4) and elastic parts (6), the shape of the shape of each chamber and slide block (4) and elastic parts (6) closely cooperates; Cover plate (2) closes with the matching form of pedestal (3), is arranged on pedestal (3), fastens with pedestal (3); The cover plate (2) that each separate chamber of pedestal (3) is corresponding respectively has 1 groove, and for installing slide block (4), slide block (4) can move forwards, backwards along X in groove; Pallet (1) is positioned at cover plate (2) top;
In each separate chamber of pedestal (3), slide block (4) is installed; Slide block (4) is " ⊥ " shape, comprises horizontal component and vertical component; The horizontal component of slide block (4) is positioned at the separate chamber of pedestal (3), and vertical component, through the groove of cover plate (2), is connected on pallet (1); Slide block (4) two sides symmetry installs one group of elastic parts (6).
2. a kind of dynamic force transfer device with two-freedom as claimed in claim 1, it is characterized in that: the shape of described pallet (1) is slab construction or curved-surface structure, the lower surface of pallet (1) is plane.
3. a kind of dynamic force transfer device with two-freedom as claimed in claim 1, it is characterized in that: described slide block (4) and adopt oil film supporting way to reduce friction between cover plate (2) and pedestal (3), and transmit dynamic load.
4. a kind of dynamic force transfer device with two-freedom as claimed in claim 3, it is characterized in that: described slide block (4) and form laterally zygomorphic 4 slightly wide spaces between cover plate (2) and pedestal (3) as oil pocket (8), the space of oil pocket (8) both sides is narrower, as sealing oil edge (9), in oil pocket (8), pass into hydraulic oil form 4 lubricating pads; Each lubricating pad comprises oil pocket (8) and is positioned at the sealing oil edge (9) of oil pocket both sides, and oil pocket (8) inside holds fluid.
5. a kind of dynamic force transfer device with two-freedom as claimed in claim 4, is characterized in that: the junction of described each oil circuit duct or oil circuit and oil pocket (8) is provided with flow controller (7) for carrying out throttling control to hydraulic oil.
6. a kind of dynamic force transfer device with two-freedom as claimed in claim 1, is characterized in that: described elastic parts (6) is common spring or dished spring assembly.
7. a kind of dynamic force transfer device with two-freedom as claimed in claim 1, is characterized in that: be also respectively provided with one or more way block (5) between described each slide block (4) and elastic parts (6).
8. a kind of dynamic force transfer device with two-freedom as claimed in claim 1, is characterized in that: the groove of described cover plate (2) is strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308927.1A CN105277377A (en) | 2014-07-01 | 2014-07-01 | Dynamic force transmission device having two degrees of freedom |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308927.1A CN105277377A (en) | 2014-07-01 | 2014-07-01 | Dynamic force transmission device having two degrees of freedom |
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| Publication Number | Publication Date |
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| CN105277377A true CN105277377A (en) | 2016-01-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410308927.1A Pending CN105277377A (en) | 2014-07-01 | 2014-07-01 | Dynamic force transmission device having two degrees of freedom |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827289A (en) * | 1972-12-05 | 1974-08-06 | Us Army | Vehicle test fixture |
| CN201945461U (en) * | 2010-12-13 | 2011-08-24 | 浙江吉利汽车研究院有限公司 | Endurance test device for automobile rear suspension bracket |
| CN102865987A (en) * | 2012-09-17 | 2013-01-09 | 苏州苏试试验仪器股份有限公司 | Plane static pressure type vibration transferring and decoupling device and tri-axial vibration composite experiment table |
| CN103149037A (en) * | 2013-03-22 | 2013-06-12 | 吉林大学 | Multiple-degree-of-freedom suspension K&C (kinematics & compliance) property test platform |
| CN203929405U (en) * | 2014-07-01 | 2014-11-05 | 北京强度环境研究所 | A kind of dynamic force transfer device with two-freedom |
-
2014
- 2014-07-01 CN CN201410308927.1A patent/CN105277377A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3827289A (en) * | 1972-12-05 | 1974-08-06 | Us Army | Vehicle test fixture |
| CN201945461U (en) * | 2010-12-13 | 2011-08-24 | 浙江吉利汽车研究院有限公司 | Endurance test device for automobile rear suspension bracket |
| CN102865987A (en) * | 2012-09-17 | 2013-01-09 | 苏州苏试试验仪器股份有限公司 | Plane static pressure type vibration transferring and decoupling device and tri-axial vibration composite experiment table |
| CN103149037A (en) * | 2013-03-22 | 2013-06-12 | 吉林大学 | Multiple-degree-of-freedom suspension K&C (kinematics & compliance) property test platform |
| CN203929405U (en) * | 2014-07-01 | 2014-11-05 | 北京强度环境研究所 | A kind of dynamic force transfer device with two-freedom |
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Application publication date: 20160127 |