CN202994370U - Testing host - Google Patents
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- CN202994370U CN202994370U CN 201220438851 CN201220438851U CN202994370U CN 202994370 U CN202994370 U CN 202994370U CN 201220438851 CN201220438851 CN 201220438851 CN 201220438851 U CN201220438851 U CN 201220438851U CN 202994370 U CN202994370 U CN 202994370U
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Abstract
The utility model provides a testing host comprising a swinging component, a sliding component, and an overturning system. The swinging component comprises a swinging disc capable of swinging back and forth freely. The sliding component comprises a sliding disc, which is disposed on the swinging disc, and is capable of sliding back and forth with respect to the swing disc. The overturning system is disposed on the sliding disc, and can be used to drive an object to be tested to be turned over, and can rotate in a horizontal plane. The passenger car testing host provided in the utility model has a plurality of testable parameters, and the testing process is short, and the efficiency is high.
Description
Technical field
The utility model relates to a kind of Test Host, in particular for the main frame of test rigid body barycenter and moment of inertia.
Background technology
Along with the fast development of economy, the raising of living standards of the people, people have obviously had higher requirement to the quality of life.Such as the variation of the vehicles, from originally walking to the bicycle epoch, then be transitioned at leisure the motorcycle epoch from the bicycle epoch, and automobile also more and more enters ordinary people's family now, becomes the indispensable vehicles of people.
For car load, its height of center of mass directly affects car load and rolls and the pitching performance; Its moment of inertia directly affects vehicle transient state control stability; And the parameters such as the barycenter of automobile and moment of inertia are the parameters that must know in the simulation analysis process of automobile.
In prior art, the method for measuring object mass center, moment of inertia mainly contains three kinds: three-line pendulum method, Inertia Based on Torsion Pendulum Method and compound pendulum.Wherein, the three-line pendulum method is measured the testee moment of inertia and is had the simple advantage of equipment, but shortcoming is that its measuring accuracy is lower, is wasted time and energy by the installation of test specimen, and the test period is long.Inertia Based on Torsion Pendulum Method and physical pendulum ratio juris are basic identical, but the testing table that utilizes Inertia Based on Torsion Pendulum Method to measure, the control that the adjustment of testee various placing attitude on testing table and the measurement of each relative position are difficult to obtain brings very large impact, the measuring accuracy that is difficult to obtain can for final measuring accuracy.
At present, the test of barycenter, moment of inertia is mainly Inertia Based on Torsion Pendulum Method and compound pendulum.Existing various testing tool complex structure, expensive, and the parameter that can measure is limited, and length consuming time causes testing efficiency low.
The utility model content
Testing tool measurement parameter in prior art is limited in order to overcome, the problem of length consuming time, and the utility model provides a kind of Test Host, and measurable parameter is many, and measuring process is short, and efficient is high.
The disclosed Test Host of the utility model comprises wobble component, slide assemblies and overturn system; Described wobble component comprises the balance that can freely swing at fore-and-aft direction; Described slide assemblies comprises and being arranged on balance, and the sliding plate that relatively slides before and after balance; Described overturn system is arranged on sliding plate, is used for driving object to be tested and stirs and rotate in surface level.
When the disclosed Test Host of the utility model is used for test barycenter or moment of inertia, with object to be tested be fixed in turn on, by adjusting sliding plate, overturn system, object to be tested is under different states, know distance, the angle of dial rotation and the angle that turns over and that sliding plate slides, by calculating the barycenter that to know object to be tested.And object to be tested is under different states, balance is swung, know distance and balance pendulum period that sliding plate slides, can know by calculating the moment of inertia of object to be tested.Thereby realize the test to barycenter or the moment of inertia of object under test, and measuring process is short, efficient is high.
Improve structure as the first, on aforementioned prototype structure basis, described overturn system comprises runner assembly and stirs assembly; Described runner assembly comprises and being arranged on sliding plate, and the rotating disk that can rotate at the sliding plate surface level; The described assembly that stirs comprises and being arranged on rotating disk, and turning over of tilting of rotating disk relatively.
Improve structure as the second, improve on architecture basics in the first, described wobble component also comprises support and swing arm, and balance relative two ends are fixed in described swing arm, and extend upward, and are connected with support, and described swing arm can freely swing front and back on support.
Improve structure as the third, first or the second improve on architecture basics, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; Described wobble component also comprises swinging block, and the swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the first side of the edge of a knife and the second side as axis of oscillation, described axis of oscillation is the intersection of the 3rd side and the 4th side simultaneously;
Perhaps, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Described wobble component also comprises swinging block, and swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the 3rd side of the edge of a knife and the 4th side as axis of oscillation, described axis of oscillation is the intersection of the first side and two sides simultaneously.
As the 4th kind of improvement structure, improve on architecture basics at the third, described wobble component also comprises extended in opposite directions two cantilevers in two stands top; Described fixed block is fixed on cantilever; The swinging block top all is fixed with web joint, and web joint all extends swing arm downwards.
Improve structure as the 5th kind, the 3rd or the 4th kind improve on architecture basics, fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; The swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; The angle of the first side and the second side is 58-92 °; The angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side;
Perhaps, fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface, and described the 3rd side and the 4th side angle are 58-92 °, and the angle of described the first side and the second side is than the large 26-34 of angle ° of the 3rd side and the 4th side.
Improve structure as the 6th kind, the 3rd or the 4th kind improve on architecture basics, more preferably, fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; The swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; The angle of the first side and the second side is 58-62 ° or 88-92 °; The angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side;
Perhaps, fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface, described the 3rd side and the 4th side angle are 58-62 ° or 88-92 °, and the angle of described the first side and the second side is than the large 26-34 of angle ° of the 3rd side and the 4th side.
When the disclosed Test Host of the utility model has said structure, can make the barycenter or the moment of inertia precision that measure higher.
Improve structure as the 7th kind, improve on architecture basics prototype structure, first to the 6th kind, have the slide rail that fore-and-aft direction arranges on described balance, described sliding plate is arranged on slide rail and can slides along slide rail.
As the 8th kind of improvement structure, improve on architecture basics at the 7th kind, be fixed with electric cylinder body on described balance, be fixed with electric cylinder connector on described sliding plate, described electric cylinder body and electric cylinder connector are connected, and realize the slip of sliding plate and fix.
Improve structure as the 9th kind, improve on architecture basics prototype structure, first to the 8th kind, be provided with on described balance for the measurer of measuring the sliding plate sliding distance.
As the tenth kind of improvement structure, improve on architecture basics in the first, be fixed with rotating mechanism on described sliding plate, described rotating mechanism is fixedly attached to rotating disk, and can control rotating disk and carry out rotation.
Improve structure as the 11 kind, first to the 6th, the 8th, on the tenth kind of any one basis in improving structure, on described rotating disk, the two ends, left and right are fixed with lower mount pad, and lower mount pad is hinged with upper mount pad by hinge; Described turning over is fixed on mount pad, and can the left side or the hinge on right side be that trip shaft overturns, the relative rotating disk that turns over is tilted.
As the 12 kind of improvement structure, improve on architecture basics at the 11 kind, have four lower mount pads on described rotating disk, four lower mount pad rectangular distributions take fore-and-aft direction as length direction.
Improve structure as the 13 kind, improving on architecture basics prototype structure, the first to the 12 kind, be fixed with on described balance for the inclinometer of measuring the balance angle of inclination
Improve structure as the 14 kind, second or the third improve on architecture basics, described support is fixed on base station.
As the 15 kind of improvement structure, improve on architecture basics at the 14 kind, be fixed with on described base station for the test balance periodic instrument of hunting period.
Improve structure as the 16 kind, first to the 6th, the 8th, the tenth, the 12, the 14, on the 15 kind of any one basis of improving in structure, line centered by the vertical direction at the geometric center place of balance, described balance, sliding plate, rotating disk, the barycenter that turns over are positioned on center line; And during described dial rotation, the rotating disk barycenter is constant.At this moment, the disclosed Test Host of the utility model has more stable and structure balance, and is very favourable to further raising testing efficiency and precision.
Description of drawings
Fig. 1 is the Test Host duty front view that the utility model provides.
Fig. 2 is the Test Host test mode front view that the utility model provides.
Fig. 3 is the Test Host duty left view that the utility model provides.
Fig. 4 is the partial enlarged drawing at A place in Fig. 1.
Fig. 5 is the partial enlarged drawing at B place in Fig. 1.
Fig. 6 is the partial enlarged drawing at C place in Fig. 3.
Fig. 7 is fixed block and swinging block structural representation in the Test Host that provides of the utility model.
Fig. 8 is that in the Test Host test that provides of the utility model, the operating mode front view is turned on a left side.
Fig. 9 is in the Test Host test that provides of the utility model, horizontal operating mode front view.
Figure 10 is that in the Test Host test that provides of the utility model, the operating mode front view is turned on the right side.
Figure 11 is in the Test Host test that provides of the utility model, left-hand rotation operating mode vertical view.
Figure 12 is in the Test Host test that provides of the utility model, horizontal operating mode vertical view.
Figure 13 is in the Test Host test that provides of the utility model, right-hand rotation operating mode vertical view.
Wherein, 11, support; 12, cantilever; 21, swing arm; 22, web joint; 23, balance; 231, inclinometer; 232, periodic instrument; 31, fixed block; 311, the first side; 312, the second side; 32, swinging block; 321, the 3rd side; 322, the 4th side; 33, axis of oscillation; 4, base station; 5, sliding plate; 51, electric cylinder body; 52, electric cylinder connector; 53, grating scale; 6, rotating disk; 71, turn over; 72, lower mount pad; 73, upper mount pad; 74, hinge; 75, support bar; 8, passenger car; 81, tire.
Embodiment
Clearer for technical matters, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
In description of the present utility model, it will be appreciated that, term " on ", orientation or the position relationship of the indications such as D score, 'fornt', 'back', " left side ", " right side ", " vertically ", " level ", " interior ", " outward " be based on orientation or the position relationship shown in accompanying drawing 1, only the utility model and simplified characterization for convenience of description, rather than indicate or hint that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as restriction of the present utility model.In description of the present utility model, except as otherwise noted, the implication of " a plurality of " is two or more.
In description of the present utility model, need to prove, unless clear and definite regulation and restriction are separately arranged, term " installation ", " being connected ", " connection " should be done broad understanding, for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand the concrete meaning of above-mentioned term in the utility model.
The disclosed Test Host of the utility model comprises wobble component, slide assemblies and overturn system; Described wobble component comprises the balance that can freely swing at fore-and-aft direction; Described slide assemblies comprises and being arranged on balance, and the sliding plate that relatively slides before and after balance; Described overturn system is arranged on sliding plate, is used for driving object to be tested and stirs and rotate in surface level.
Described wobble component comprises balance, and described balance can freely swing at fore-and-aft direction.As is known to the person skilled in the art, described swing is that pendulum model swings, and namely freely swings around an axis of swing.The direction of described swing is fore-and-aft direction.
In the utility model, the balance in wobble component does not have particular restriction, only needs that balance is freely swung at fore-and-aft direction and gets final product, and its supporting construction can adopt existing various structure.According to the utility model, under preferable case, described wobble component also comprises support and swing arm, and balance relative two ends are fixed in described swing arm, and extend upward, and is connected with support, and described swing arm freely swing before and after can be on support.
Under preferable case, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; Described wobble component also comprises swinging block, and the swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the first side of the edge of a knife and the second side as axis of oscillation, described axis of oscillation is the intersection of the 3rd side and the 4th side simultaneously.
At this moment, by coordinating of the edge of a knife and recess, can realize that swing arm and balance swing around axis of oscillation, it is little that it swings resistance, and hunting period, decay was full, and hunting period is stable.
Further under preferable case, the angle of the first side and the second side is 58-92 °; The angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side.Further, the angle of the first side and the second side is 58-62 ° or 88-92 °.
In said structure, support is used for supporting whole assembly as supporter.For its structure, not restriction only needs to realize that support function gets final product.For example the support of frame-type can be adopted, also tabular sway brace can be adopted.
According to the utility model, be used for supporting whole swing system, described support has two, and is oppositely arranged.Distinguish for swinging between two supports that are oppositely arranged.
Be fixed with fixed block on support.In the utility model, the vitals of fixed block for realizing swinging.The mounting means of fixed block on support has multiple, under preferable case, comprises that the two stands top extends two cantilevers in opposite directions; Described fixed block is fixed on cantilever.
Two cantilever tops of extending in opposite directions respectively are fixed with a fixed block.Fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface.In the utility model, take the intersection of the first side and the second side as axis of oscillation, the edge of a knife is triangle perpendicular to the xsect of axis of oscillation.The intersection that is appreciated that the first side of the edge of a knife that is positioned on left side brackets and the second side with the intersection of the first side that is positioned at the edge of a knife on the support of right side and the second side on same straight line.
According to the utility model, the angle of the first side and the second side is 58-92 °.Be that edge of a knife angle is 58-92 °.
Simultaneously, described balance staff assembly also comprises swinging block.Swinging block realizes as coordinating with fixed block the functional part that swings.Swinging block is arranged on fixed block.The swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface.Simultaneously, described axis of oscillation is the intersection of the 3rd side and the 4th side simultaneously; Namely the intersection of the 3rd side and the 4th side and axis of oscillation are same straight line.Because the edge of a knife and recess are different three-dimensional bodies, say accurately, the intersection of the first side and the second side (being axis of oscillation) can not be same straight line with the intersection of the 3rd side and the 4th side, but, in the utility model, difference herein can be ignored, and edge of a knife top (intersection of the first side and the second side) and the recess bottom (intersection of the 3rd side and the 4th side) that approaches very much is considered as same straight line.That is, the xsect perpendicular to axis of oscillation of recess is triangle.And the angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side.Be that the recess angle is than the large 26-34 of angle ° of the first side and the second side.
Concrete, the edge of a knife top by fixed block of being connected of swinging block and fixed block is positioned at the recess bottom and realizes.At this moment, the intersection of the first side and the second side (being edge of a knife top) in the utility model, is considered as conllinear with the intersection (being the recess bottom) of the 3rd side and the 4th side.Need to prove, on above-below direction, the above-mentioned edge of a knife is outstanding up, and edge of a knife top is positioned at whole knife edge structure topmost.Recess is that the swinging block bottom upwards is recessed to form, therefore the openend of recess is positioned at whole notch configuration foot, the recess bottom is positioned at whole notch configuration topmost.
According to the utility model, the fixed block with edge of a knife is two, lays respectively on two cantilevers of two cantilever tip that relatively arrange.Same, the recess that coordinates with the edge of a knife has two, namely has two swinging blocks, all according to the connected mode of the aforesaid edge of a knife and recess, is connected with fixed block.
In the test to passenger car moment of inertia etc., usually need to adopt to swing correlation parameter is tested.So swing process has considerable influence to the precision of parameter testing.The inventor finds, existing tilting mechanism is such as bearing etc., change very fast its hunting period, usually do not have time enough to get parms, and, because it changes soon, parameter error hunting period of acquisition is large, and then affects the measuring accuracy of last moment of inertia.
And in the disclosed wobble component of the utility model, edge of a knife angle is 58-92 ° and recess angle during than the large 26-34 of edge of a knife angle °, and in swing process, change slower hunting period, can there be time enough to obtain hunting period, and hunting period is long, can obtain and more organize data, can better eliminate error, make the precision of the hunting period of obtaining higher, error is less, and is very favourable to improving measuring accuracy.
In addition, when the angle of the angle of recess and the edge of a knife satisfies above-mentioned relation, can guarantee that the edge of a knife does not return the generation slippage in swing process, and can greatly reduce the edge of a knife and the moment of torsion of recess in swing process, guarantee that the edge of a knife and recess are stable, injury-free; Simultaneously, the edge of a knife that above-mentioned angle coordinates and recess can guarantee the stability that swings to make the amplitude of oscillation of swing stable greatly, can guarantee that the parameters such as hunting period of obtaining have higher precision.
Further, during for 58-62 ° or 88-92 °, above-mentioned effect is particularly evident when the angle (being edge of a knife angle) of the first side and the second side.Especially when edge of a knife angle is 88-92 °, on the aforementioned advantages basis, can further improve the serviceable life of balance staff assembly.
In the utility model, swinging block is fixedly connected with swing arm.Described swing arm can be directly fixed on swinging block, under preferable case, is fixed with web joint above swinging block, and web joint extends swing arm downwards.Between the swing arm of two swinging block connections, be connected with balance.Described balance is used for carrying and needs tested object.Under preferable case, described wobble component is lower time in the raw, and balance is in horizontality.
Under preferable case, two swing arms are extended respectively at the two ends of described web joint downwards.Two swing arms of the same end of web joint all are connected with the corresponding end of balance, are used for more stable connection balance.The plane at two swing arm places of the same end of web joint is vertical with axis of oscillation.
For the barycenter that makes the disclosed wobble component of the utility model more stable, avoid rocking test is exerted an influence, under preferable case, take the perpendicular at axis of oscillation place as the plane of symmetry, the structure of described support, cantilever, fixed block, swinging block, web joint, swing arm, balance is symmetrical with the plane of symmetry separately.
Similarly, according to the utility model, the edge of a knife in said structure and the position of recess can exchange, and namely the edge of a knife is positioned at swinging block bottom, and recess is positioned at the fixed block top.Concrete, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Described wobble component also comprises swinging block, and swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the 3rd side of the edge of a knife and the 4th side as axis of oscillation, described axis of oscillation is the intersection of the first side and the second side simultaneously.
Similar with aforementioned structure, the angle of described the 3rd side and the 4th side (being edge of a knife angle) is 58-92 °, and the angle of the first side and the second side (being the recess angle) is than the large 26-34 of angle ° of the 3rd side and the 4th side.
Same, during for 58-62 ° or 88-92 °, the stability to further assurance swings improves measuring accuracy more favourable when the angle (being edge of a knife angle) of the 3rd side and the 4th side.Especially when edge of a knife angle is 88-92 °, on the aforementioned advantages basis, can further improve the serviceable life of balance staff assembly.
Similar with aforementioned structure, in this structure, on above-below direction, the above-mentioned edge of a knife is outstanding down, and edge of a knife top is positioned at whole knife edge structure foot.Recess is that the fixed block top is recessed to form downwards, therefore the openend of recess is positioned at whole notch configuration topmost, the recess bottom is positioned at whole notch configuration foot.
According to the utility model, described wobble component also comprises extended in opposite directions two cantilevers in two stands top; Described fixed block is fixed on cantilever; The swinging block top all is fixed with web joint, and web joint all extends swing arm downwards.
In the utility model, in disclosed Test Host, sliding plate is arranged on balance, and can be along the front and back upward sliding on balance.When testing, because the barycenter of tested object is unknown, when tested object be fixed in turn over upper after, the barycenter of measured object and testboard bay barycenter be not generally on a vertical curve, whole system (testee and Test Host) plays pendulum, balance can swing at fore-and-aft direction, departs from its original position.At this moment, by the slip sliding plate, drive the overturn system on it and the object to be tested that is positioned on turning over slides, adjust the centroid position of whole system, make balance slowly be returned to the original position, thereby system reaches balance again.
For sliding plate can be slided on balance, can be accomplished in several ways, in the utility model, under preferable case, have the slide rail that fore-and-aft direction arranges on described balance, described sliding plate is arranged on slide rail and can slides along slide rail.
According to the utility model, be fixed with electric cylinder body on described balance, be fixed with electric cylinder connector on described sliding plate, described electric cylinder body and electric cylinder connector are connected, and realize the slip of sliding plate and fix.In i.e. use process, when needing the slip sliding plate, control electric cylinder body and electric cylinder connector, the electric cylinder core in electric cylinder body is stretched, realize push pull maneuver, make the relative balance of sliding plate produce slippage.By the cooperation of electric cylinder body and electric cylinder connector, not only can start sliding plate and carry out slippage, also have simultaneously the effect of locking.Need to prove, the setting of above-mentioned electric cylinder connector and electric cylinder body is only a kind of mode, can also adopt other that structure similarly is set, and moves at fore-and-aft direction relative to balance as long as can realize driving sliding plate, and the lockable sliding plate, make static the getting final product of the relative balance of sliding plate.
When adopting the disclosed Test Host of the utility model to test, usually also need to know the distance of sliding plate slip, according to the utility model, under preferable case, be provided with on described balance for the measurer of measuring the sliding plate sliding distance.In order to improve precision, more preferably in situation, can adopt grating scale as measurer.
As everyone knows, grating scale is comprised of scale grating and grating reading head two parts.In the utility model, grating reading head is fixed on balance, and the scale grating is arranged on sliding plate, and indication grating is contained in grating reading head.The slip of sliding plate drives the scale grating and moves, and moves relative to grating reading head, then produces reading.This reading is the distance that the relative balance of sliding plate slides.
In said process, constantly adjust by electric cylinder body and electric cylinder connector the distance that sliding plate slides, make balance slowly be returned to the original position.Due to balance when the non-original position, in the vertical direction, certain angle has been departed from its relative original position, according to the utility model, for whether better monitoring balance is returned to the original position, under preferable case, is fixed with inclinometer on described balance.Measure by inclinometer the angle that balance tilts.In the utility model, described inclinometer can adopt various inclinometer of the prior art, as long as can test the angle that balance swings, for example, described inclinometer is fixed on balance, when the balance horizontal stationary, the pointed scale " 0 " of inclinometer shows that the balance deflection angle is 0; When balance swings, produce, be in non-standard state, at this moment, the pointer and the index dial that are fixed in the inclinometer on balance relatively move, and make the reading of pointer non-zero, and the reading on pointer index dial pointed is the angle of balance deflection.
By above-mentioned inclinometer, after knowing that balance is returned to the original position, read the reading of grating scale, and record.
For the test of barycenter and the moment of inertia of realizing treating test object, need repeatedly adjust the attitude of object to be tested, in the utility model, realize by overturn system.Concrete, described overturn system comprises runner assembly and stirs assembly; Described runner assembly comprises and being arranged on sliding plate, and the rotating disk that can rotate at the sliding plate surface level; The described assembly that stirs comprises and being arranged on rotating disk, and turning over of tilting of rotating disk relatively.
According to the utility model, described rotating disk is arranged on sliding plate, and can rotate on sliding plate.
Usually, in order to realize treating the test of test object barycenter and moment of inertia, need to change the attitude of object to be tested.In the utility model, described rotating disk is arranged on sliding plate, and can rotate on sliding plate.And then drive the object to be tested be fixed on turning over and turning on rotating disk and rotate, thereby realize the change of gestures of object to be tested.
In order to realize that rotating disk rotates on sliding plate, concrete structure is restriction not, as long as can achieve the above object, under preferable case, is fixed with rotating mechanism on described sliding plate, and described rotating mechanism is fixedly attached to rotating disk, and can control rotating disk and carry out rotation.Concrete, sliding plate is connected by rotation track with rotating disk, and rotating disk can rotate along rotation track.The rotation of rotating disk can rotate or be connected on rotating disk by motor, motor by manpower, drives dial rotation.
The purpose same with rotating disk in order to realize treating the test of test object barycenter and moment of inertia, needs to change the attitude of object to be tested.In the utility model, drive object overturning to be tested by turning over and tilt, in order to the parameters such as its barycenter and moment of inertia are tested.
For achieving the above object, according to the utility model, driving turns over gets final product in the left and right directions tip tilt.Under preferable case, on described rotating disk, the two ends, left and right are fixed with lower mount pad, and lower mount pad is hinged with upper mount pad by hinge; Described turning over is fixed on mount pad, and can the left side or the hinge on right side be that trip shaft overturns, the relative rotating disk that turns over is tilted.
According to said structure, in the time of need to overturning left, can drive and turn over, overturn take the hinge in left side as trip shaft; Equally, when needs overturn to the right, can overturn take the hinge on right side as trip shaft.
Based on said structure, under preferable case, have four lower mount pads on described rotating disk, four lower mount pad rectangular distributions take fore-and-aft direction as length direction.I.e. four rectangles that lower mount pad is linked to be, its four limit lays respectively at fore-and-aft direction and left and right directions.
To turn over flip an angle after, need to turn over fixing, make it keep the state of inclination, in order to test.Under above-mentioned state, the lower mount pad that is fixed on rotating disk is hinged by hinge with the upper mount pad that is fixed on turning over.When needs stir, the hinge of one side can be disassembled, the hinge that turns over around opposite side is rotated, realize tip tilt, for example,, hinge and the upper mount pad on right side, the lower mount pad on right side can be taken apart left during tip tilt when needs, and by the lifting appliance right side that will turn over slinging, make its inclination, then adopt they sup-port in rotating disk and turn between the right side, will turn over fixing, making it keep the state of inclination.
Simultaneously, according to the utility model, described two supports are fixed on base station.By base station, two supports are coupled together, make wobble component become a fixing integral body.Being convenient to it moves.
When adopting the disclosed Test Host test of the utility model moment of inertia, the hunting period that need obtain balance, in the utility model, can be on base station the fixed cycle instrument, to testing the hunting period of balance.In the utility model, described periodic instrument can adopt various periodic instrument of the prior art, as long as can test the balance pendulum period.
For the barycenter that makes the disclosed Test Host of the utility model more stable, avoid rocking test is exerted an influence, under preferable case, line centered by the line of the vertical direction of crossing the axis of oscillation mid point, described balance, sliding plate, rotating disk, the barycenter that turns over are positioned on center line; And during described dial rotation, the rotating disk barycenter is constant.For said structure, equivalence, can be take center line as symcenter, described support, cantilever, fixed block, swinging block, web joint, swing arm, balance, sliding plate, rotating disk, the structure that turns over are symmetrical with centerline axis separately.Have above-mentioned feature balance, sliding plate, rotating disk, turn over and can realize in process, the barycenter of all parts also can obtain after machining, and its acquisition methods is well known in the art, for example, for mass distribution parts symmetrically and evenly, its barycenter is its geometric center.For above-mentioned balance, sliding plate, rotating disk, turn over, under preferable case, described balance, turn over and sliding plate is tabular cube structure, described rotating disk is tabular cube structure or tabular cylindrical structure.
In the utility model, above-mentioned balance, sliding plate, rotating disk and the mutual alignment relation that turns over can be adjusted, and only need to drive object to be tested and rotate and stir and get final product.For example, can be with rotating disk and the location swap that turns over.
In the utility model, only describe with balance, sliding plate, rotating disk, the example that is set to that turns over from bottom to up.
Fig. 1-Fig. 7 shows a kind of preferred implementation of the disclosed Test Host of the utility model.
This Test Host comprises wobble component, slide assemblies, runner assembly and stirs assembly.
Wobble component comprises base station 4, and base station 4 two ends, left and right are fixed with 11, two, two supports support 11 tops extends separately 12, two cantilevers 12 of a cantilever and arrange in opposite directions, specifically as shown in Figure 4.The cantilever 12 that is left side in Fig. 1 extends from the support 11 in the left side support 11 towards the right side, and similarly, the cantilever 12 on right side arranges from the support 11 of support 11 towards the left side on right side.
Be provided with swinging block 32 on fixed block 31.Swinging block 32 bottoms have recess, and recessed surfaces is two crossing planes, i.e. the 3rd side 321 and the 4th side 322.The intersection of the 3rd side 321 and the 4th side 322 and axis of oscillation 33 conllinear.As shown in Figure 7, in the present embodiment, the angle that the 3rd side 321 and the 4th side 322 form is 120 °.The top of the described edge of a knife is positioned at the bottom of recess.Specifically as shown in Figure 6.
Referring to Fig. 3, the top of swinging block 32 is fixed on web joint 22.Web joint 22 edges are extended two swing arms 21 downwards perpendicular to the two ends of the direction of axis of oscillation 33, two web joints 22 on two supports 11 extend respectively two swing arms 21,21, four swing arms 21 of totally four swing arms are fixedly connected on the relative two ends of balance 23, and balance 23 is fixing.
As shown in Figure 1, balance 23 is square plate.Have the sliding plate 5 that is similarly square on it, sliding plate 5 is connected the slide rail that arranges by fore-and-aft direction and is connected with balance, and sliding plate 5 can be along the slide rail (not shown) of sliding.And be fixed with electric cylinder body 51 on balance 23, be fixed with electric cylinder connector 52 on described sliding plate 5, described electric cylinder body 51 and electric cylinder connector 52 are connected.Simultaneously, also be provided with grating scale 53 on balance 23, can read the distance that sliding plate 5 moves.
In addition, also be provided with inclinometer 231 on balance 23, be used for measuring the angle that balance 23 swings.
Sliding plate 5 tops are fixed with rotating disk 6, and sliding plate 5 is connected by rotation track with rotating disk 6, and rotating disk 6 can rotate (not shown) along rotation track.
When needs left during tip tilt, the hinge 74 on right side and upper mount pad 73, the lower mount pad 72 on right side can be taken apart, and by lifting appliance 71 right sides that will turn over slinging, make its inclination, then adopt support bar 75 to be supported in rotating disk 6 and turn between 71 right sides, to turn over 71 fixing, and make it keep the state of inclination.
Line centered by the vertical direction at the geometric center place of balance 23, described support 11, cantilever 12, fixed block 31, swinging block 32, web joint 22, swing arm 21, balance 23, sliding plate 5, rotating disk 6,71 the structure of turning over are symmetrical with centerline axis separately.
The below as object to be tested, illustrates the course of work of the disclosed Test Host test of the utility model barycenter with passenger car 8:
Usually, the test meeting of passenger car 8 is carried out as the basis take following several operating modes, that is: operating mode 1-does not turn and does not turn over (Fig. 9 and Figure 12); Operating mode 2-turns left not turn over (Figure 11); (not shown) is turned on an operating mode 3-left-hand rotation left side; Operating mode 4-does not turn left and turns over (Fig. 8); Operating mode 5-does not turn right and turns over (Figure 10); (not shown) is turned on the operating mode 6-right-hand rotation right side; Operating mode 7-turns right and does not turn over (Figure 13); (not shown) is turned on an operating mode 8-right-hand rotation left side; (not shown) is turned on the operating mode 9-left-hand rotation right side.
In the barycenter test, for left barycenter vehicle, can adopt operating mode 1, operating mode 2, operating mode 3 to test; And for right barycenter vehicle, can adopt operating mode 1, operating mode 6, operating mode 7 to test.
Take turn over locus, barycenter place as initial point (be that initial point is fixed, do not change with the upset that turns over), the direction that makes progress from initial point along center line is Z axis, from initial point along forward (Fig. 1, passenger car 8 headstock directions) be X-axis, be Y-axis from initial point along (Fig. 1 passenger car 8 left sides) left, set up three-dimensional system of coordinate.The coordinate of passenger car 8 barycenter in this three-dimensional system of coordinate is designated as C(X
c, Y
c, Z
c).
Driving rotating disk 6 rotates.Due to passenger car 8 deflections, its barycenter moves, and balance 23 can depart from the original position again, again processes according to above-mentioned leveling, makes balance 23 be returned to original position (operating mode 2, Figure 27), after leveling is processed, records the distance that sliding plate 5 slides.
Upset again after passenger car 8 is rotated.
Again process according to above-mentioned leveling, make balance 23 be returned to original position (operating mode 3), after leveling is processed, record the distance that sliding plate 5 slides.
At last, according to distance, the angle that rotating disk 6 rotates and the angle that turns over 71 upsets that the sliding plate 5 that obtains under various different operating modes slides, utilize principle of moment balance to calculate and to obtain the center-of-mass coordinate of passenger car 8 in above-mentioned three-dimensional system of coordinate.
The below describes the principle of utilizing principle of moment balance to calculate the vehicle center-of-mass coordinate in detail.
Take system that passenger car 8 and testboard bay form as research object.Line centered by the line of the vertical direction at axis of oscillation 33 mid point places, after passenger car 8 was fixed on testboard bay, not on center line, there was moment in the suffered gravity of passenger car 8 with respect to center line, counts M due to its barycenter
Car, this moment makes whole system be in non-equilibrium state, needs slip sliding plate 5 with leveling system.After leveling, the locus of the barycenter of turntable (sliding plate 5+ rotating disk 6+ turns over 71) changes, and also can there be moment in the suffered gravity of turntable after the position changes with respect to center line, counts M
PlatformAccording to principle of moment balance, M
Car=M
PlatformAccording to Calculating Torque during Rotary formula M=F * L(wherein, F is gravity.L is that barycenter is to the distance of center line) and sliding plate 5 angle of rotating with respect to the mobile distance of setting a table (the cursor chi measures), rotating disk 6, the angles that turn over 71 upsets, can calculate below the center-of-mass coordinate of vehicle with vehicle barycenter X
c, Y
cAnd Z
cConcrete computation process only relates to arithmetic and basic trigonometric function, and those skilled in the art are known, do not giving unnecessary details at this.
Can obtain the center-of-mass coordinate of passenger car 8 in above-mentioned three-dimensional system of coordinate by said method.
The below briefly introduces the measurement of vehicle moment of inertia.
As be known in the art: physical pendulum claims again compound pendulum.Quality is that the object of the arbitrary shape of m can freely rotate around smooth transverse axis, when it is pulled away from one of equilibrium position minute angle θ (0≤5 °) by the stationary state that naturally droops, ignore air resistance, object will be done to freely swing around axle, and such device claims physical pendulum.Hence one can see that, and the method reality of the disclosed testboard bay test of the utility model moment of inertia is also compound pendulum.
The method of calculating solid moment of inertia by compound pendulum is known, establishes the barycenter of physical pendulum at the C point, and C is h to the distance of transverse axis, and physical pendulum is J to the moment of inertia of transverse axis, has when physical pendulum is made little angular oscillation under the effect of gravitational torque:
M=-mghsinθ≈-mghθ；
According to law of rotation: M=Jd
2θ/dt
2
Can get: (d
2θ/dt
2)+mgh θ/J=0;
Make ω=(mgh/J)
1/2=2 π/T;
Obtain formula (1): J=mghT
2/ (4 π
2);
Be the circular frequency of ω physical pendulum in formula, T is physical pendulum hunting period.
In addition, according to parallel axis theorem, rigid body is with respect to the moment of inertia J of arbitrary axis, equals rigid body with respect to the moment of inertia J by its barycenter and the axle parallel with this axle
c, add between Rigid Mass m and diaxon apart from d square product, i.e. formula (2): J=J
c+ md
2
When calculating the moment of inertia of passenger car 8, during at first according to formula (1) and a certain operating mode i of formula (2) calculating, stand is with respect to the moment of inertia J of axis of oscillation 33
Stand, and the system of passenger car 8 and testboard bay composition is with respect to the moment of inertia J of axis of oscillation 33
System, then obtain passenger car 8 with respect to the moment of inertia J of axis of oscillation 33 according to following formula (3)
Object
Formula (3): J
Object=J
System-J
Stand
Can be found out by formula (3), system equals to form each quality module of this system with respect to the moment of inertia sum of this axle with respect to the moment of inertia of certain axle.Therefore, the moment of inertia of testboard bay equals to form the moment of inertia sum of each quality module (sliding plate, rotating disk, turn over, swing arm, balance etc.) of stand.The moment of inertia of each quality module all satisfies formula (1).
Through type (3) calculates passenger car 8 with respect to the moment of inertia J of axis of oscillation 33
ObjectAfter, again adopt parallel axis theorem formula (2), can calculate passenger car 8 with respect to crossing passenger car 8 barycenter and the moment of inertia of the axle parallel with axis of oscillation 33.
According to the utility model, in this test, select multiple test the in 9 kinds of operating modes.According to following formula (1), obtain the moment of inertia with respect to axis of oscillation 33, need to obtain the weight of each parts of testboard bay (such as swing arm 21, balance 23, sliding plate 5, rotating disk 6, turn over 71 etc.) and passenger car 8 before test, and barycenter separately is to the distance of axis of oscillation 33.For the above-mentioned parameter of testboard bay itself, can obtain when the manufacturing test stand.
During test, for security consideration, first adjust rotating shaft 422, make the residing spacing width of spacing beam 45 minimum.Then adjust testboard bay, it is in respectively under various working, stand is carried out leveling process.By gage measuring under various operating modes, the distance that the relative balance of sliding plate 5 23 slides; Then rotating shaft 422 according to actual needs, adjust the residing spacing width of spacing beam 45.At last, drive balance 23 and swing, by the hunting period under the periodic instrument 232 various operating modes of measurement.
At last, the angle in conjunction with any one axle of crossing the barycenter of passenger car 8 (for example axle at the barycenter of passenger car 8 and initial point line place) and described X-axis, Y-axis and Z axis can further calculate passenger car 8 with respect to the moment of inertia J of X-axis, Y-axis and Z axis
x, J
y, J
zWith product of inertia J
xy, J
yz, J
xz
By adopting the disclosed Test Host of the utility model, can test out fast, accurately the parameters such as the barycenter of passenger car 8 and moment of inertia through said method.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (17)
1. a Test Host, is characterized in that, comprises wobble component, slide assemblies and overturn system; Described wobble component comprises the balance that can freely swing at fore-and-aft direction; Described slide assemblies comprises and being arranged on balance, and the sliding plate that relatively slides before and after balance; Described overturn system is arranged on sliding plate, is used for driving object to be tested and stirs and rotate in surface level.
2. Test Host according to claim 1, is characterized in that, described overturn system comprises runner assembly and stirs assembly; Described runner assembly comprises and being arranged on sliding plate, and the rotating disk that can rotate at the sliding plate surface level; The described assembly that stirs comprises and being arranged on rotating disk, and turning over of tilting of rotating disk relatively.
3. Test Host according to claim 2, is characterized in that, described wobble component also comprises support and swing arm, and balance relative two ends are fixed in described swing arm, and extend upward, and is connected with support, and described swing arm freely swing before and after can be on support.
4. Test Host according to claim 2, is characterized in that, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; Described wobble component also comprises swinging block, and the swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the first side of the edge of a knife and the second side as axis of oscillation, described axis of oscillation is the intersection of the 3rd side and the 4th side simultaneously;
Perhaps, described wobble component comprises the two stands that is oppositely arranged, and all is fixedly connected with fixed block on described support, and fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Described wobble component also comprises swinging block, and swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface; Described swinging block is positioned on fixed block, and edge of a knife top is positioned at the recess bottom; Swinging block all is fixedly connected with swing arm, and the two ends that described balance is relative all are fixed in swing arm; Take the intersection of the 3rd side of the edge of a knife and the 4th side as axis of oscillation, described axis of oscillation is the intersection of the first side and the second side simultaneously.
5. Test Host according to claim 4, is characterized in that, described wobble component also comprises extended in opposite directions two cantilevers in two stands top; Described fixed block is fixed on cantilever; The swinging block top all is fixed with web joint, and web joint all extends swing arm downwards.
6. according to claim 4 or 5 described Test Hosts, is characterized in that, fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; The swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; The angle of the first side and the second side is 58-92 °; The angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side;
Perhaps, fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface, and described the 3rd side and the 4th side angle are 58-92 °, and the angle of described the first side and the second side is than the large 26-34 of angle ° of the 3rd side and the 4th side.
7. according to claim 4 or 5 described Test Hosts, is characterized in that, fixed block projects upwards to form and take the first side and the second side as the edge of a knife on surface; The swinging block bottom upwards is recessed to form and take the 3rd side and the 4th side as the recess on surface; The angle of the first side and the second side is 58-62 ° or 88-92 °; The angle of described the 3rd side and the 4th side is than the large 26-34 of angle ° of the first side and the second side;
Perhaps, fixed block is recessed to form downwards and take the first side and the second side as the recess on surface; Swinging block bottom outstanding formation downwards take the 3rd side and the 4th side as the edge of a knife on surface, described the 3rd side and the 4th side angle are 58-62 ° or 88-92 °, and the angle of described the first side and the second side is than the large 26-34 of angle ° of the 3rd side and the 4th side.
8. Test Host according to claim 1 and 2, is characterized in that, has the slide rail that fore-and-aft direction arranges on described balance, and described sliding plate is arranged on slide rail and can slides along slide rail.
9. Test Host according to claim 8, is characterized in that, is fixed with electric cylinder body on described balance, is fixed with electric cylinder connector on described sliding plate, and described electric cylinder body and electric cylinder connector are connected, and realizes the slip of sliding plate and fix.
10. according to claim 1,2 or 9 described Test Hosts, is characterized in that, is provided with on described balance for the measurer of measuring the sliding plate sliding distance.
11. Test Host according to claim 2 is characterized in that, is fixed with rotating mechanism on described sliding plate, described rotating mechanism is fixedly attached to rotating disk, and can control rotating disk and carry out rotation.
12. Test Host according to claim 1 and 2 is characterized in that, on described rotating disk, the two ends, left and right are fixed with lower mount pad, and lower mount pad is hinged with upper mount pad by hinge; Described turning over is fixed on mount pad, and can the left side or the hinge on right side be that trip shaft overturns, the relative rotating disk that turns over is tilted.
13. Test Host according to claim 12 is characterized in that, has the lower mount pad of four rectangular distributions on described rotating disk, described rectangle is arranged take fore-and-aft direction as length direction.
14. Test Host according to claim 1 and 2 is characterized in that, is fixed with on described balance for the inclinometer of measuring the balance angle of inclination.
15. according to claim 3 or 4 described Test Hosts is characterized in that described support is fixed on base station.
16. Test Host according to claim 15 is characterized in that, is fixed with on described base station for the test balance periodic instrument of hunting period.
17. Test Host according to claim 2, it is characterized in that, line centered by the vertical direction at the geometric center place of balance, described balance, sliding plate, rotating disk, the barycenter that turns over are positioned on center line, and during described dial rotation, the rotating disk barycenter is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438851 CN202994370U (en) | 2012-08-30 | 2012-08-30 | Testing host |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220438851 CN202994370U (en) | 2012-08-30 | 2012-08-30 | Testing host |
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| Publication Number | Publication Date |
|---|---|
| CN202994370U true CN202994370U (en) | 2013-06-12 |
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ID=48565542
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674427A (en) * | 2012-08-30 | 2014-03-26 | 广州汽车集团股份有限公司 | Testing host |
| CN105699013A (en) * | 2016-04-05 | 2016-06-22 | 浙江大学 | Aircraft gravity center position detecting device and method |
| CN105823598A (en) * | 2016-03-22 | 2016-08-03 | 山东理工大学 | Passenger car mass center position measurement device and measurement and calculation method |
| CN106197846A (en) * | 2016-10-08 | 2016-12-07 | 桂林电子科技大学 | A kind of electromotor device for adjusting posture |
| CN106289640A (en) * | 2016-07-21 | 2017-01-04 | 北京汽车研究总院有限公司 | A kind of car load Measurement System of " Moment of Inertia |
-
2012
- 2012-08-30 CN CN 201220438851 patent/CN202994370U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674427A (en) * | 2012-08-30 | 2014-03-26 | 广州汽车集团股份有限公司 | Testing host |
| CN105823598A (en) * | 2016-03-22 | 2016-08-03 | 山东理工大学 | Passenger car mass center position measurement device and measurement and calculation method |
| CN105699013A (en) * | 2016-04-05 | 2016-06-22 | 浙江大学 | Aircraft gravity center position detecting device and method |
| CN105699013B (en) * | 2016-04-05 | 2018-02-06 | 浙江大学 | Aircraft centre of gravity position measuring device and its method |
| CN106289640A (en) * | 2016-07-21 | 2017-01-04 | 北京汽车研究总院有限公司 | A kind of car load Measurement System of " Moment of Inertia |
| CN106197846A (en) * | 2016-10-08 | 2016-12-07 | 桂林电子科技大学 | A kind of electromotor device for adjusting posture |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130612 Effective date of abandoning: 20160518 |
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