CN112504693B - Static rigidity test device for body-in-white structure - Google Patents
Static rigidity test device for body-in-white structure Download PDFInfo
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- CN112504693B CN112504693B CN202011341615.2A CN202011341615A CN112504693B CN 112504693 B CN112504693 B CN 112504693B CN 202011341615 A CN202011341615 A CN 202011341615A CN 112504693 B CN112504693 B CN 112504693B
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- connecting block
- upright post
- cross beam
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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Abstract
The invention discloses a static rigidity test device of a body-in-white structure, which comprises a bracket, a first stand column mechanism and a second stand column mechanism, wherein the bracket is fixedly connected with the first stand column mechanism; the support comprises a cross beam and a support frame, and the cross beam is rotatably connected to the support frame; the first upright post mechanism and the second upright post mechanism respectively comprise a front suspension mounting upright post and a rear suspension mounting upright post; the front suspension mounting upright is arranged on the cross beam and comprises a rod piece and a base, the base is arranged on the cross beam, and the rod piece is fixedly connected to the base; the base includes connecting plate, first connecting block and second connecting block, and first connecting block can rotate or be fixed relatively with the connecting plate, and the second connecting block can rotate or be fixed relatively with first connecting block, and the axis of rotation of first connecting block is perpendicular with the axis of rotation of second connecting block. The invention solves the problem of complex structure for realizing the conversion of the bending test and the torsion test in the existing test device.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing technology and equipment, and particularly relates to a static rigidity test device for a body-in-white structure.
Background
The bending rigidity and the torsional rigidity of the white automobile body of the automobile are important technical indexes for evaluating the bending and torsional deformation resistance of the white automobile body, have important influence on the performance and the operation stability of the automobile, and influence the key performance indexes of the reliability, the safety, the NVH (noise, vibration and harshness) and the like of the automobile. Therefore, the white body structure static rigidity test device is indispensable equipment for developing passenger vehicle products, and the test contents comprise a body bending rigidity test and a body torsional rigidity test.
However, the conventional static stiffness test device for the body-in-white structure generally has the problems of complex structure and high equipment cost in the designed test bed structure in order to ensure the constrained state of the body-in-white. For example, in the test device shown in fig. 1, the restraint device of the bracket (1 a) is complex, and the inclined rod (2) needs to be detachably connected to realize the test conversion of bending and torsion.
Disclosure of Invention
The invention provides a white car body structure static rigidity test device which is used for solving the problem that the existing test device is complex in structure for realizing bending and torsion tests.
In order to solve the technical problem, the invention provides a static stiffness test device for a body-in-white structure, which comprises a bracket, a first stand column mechanism and a second stand column mechanism, wherein the first stand column mechanism and the second stand column mechanism are symmetrically arranged; the support comprises a cross beam and a support frame, and the cross beam is rotatably connected to the support frame; the first upright post mechanism and the second upright post mechanism respectively comprise a front suspension mounting upright post and a rear suspension mounting upright post; the rear suspension mounting upright post and the front suspension mounting upright post are both provided with spherical hinge structures used for being connected with a body-in-white structure; the front suspension mounting upright is arranged on the cross beam and comprises a rod piece and a base, the base is arranged on the cross beam, and the rod piece is fixedly connected to the base; the base includes connecting plate, first connecting block and second connecting block, first connecting block can with the connecting plate rotates relatively or is fixed, the second connecting block can with first connecting block rotates relatively or is fixed, the axis of rotation of first connecting block with the axis of rotation of second connecting block is perpendicular.
Preferably, the base further includes a first rotating shaft and a second rotating shaft, the first rotating shaft penetrates through the connecting plate and the first connecting block, and the second rotating shaft penetrates through the first connecting block and the second connecting block.
Preferably, the base further includes a first fixing pin and a second fixing pin, the first fixing pin is inserted through the connecting plate and the first connecting block in a pluggable manner, and the second fixing pin is inserted through the first connecting block and the second connecting block in a pluggable manner.
Preferably, the support frame further comprises two support columns, and the two support columns are arranged below the left side and the right side of the support frame and are used for supporting two ends of the cross beam.
Preferably, the rear overhang mounting post, the support post and the front overhang mounting post each comprise a first rod and a second rod arranged coaxially, the first rod being movable relative to the second rod in an axial direction thereof.
Preferably, the first rod is a solid rod, the outer peripheral surface of the first rod is provided with an external thread, the second rod is a hollow rod, the inner peripheral surface of the second rod is provided with an internal thread, and the first rod is in threaded connection with the second rod.
Preferably, the first rod member is in threaded connection with a snap ring, and the maximum diameter of the snap ring is smaller than the diameter of the inner circumferential surface of the second rod member.
Preferably, the beam is provided with a plurality of mounting holes arranged along the directions of the two ends of the beam, and the base can be connected with any one of the mounting holes.
Preferably, a coordinate scale is arranged on the cross beam along the length direction of the cross beam.
Preferably, the position at crossbeam both ends is installed respectively and is used for connecting the coupling assembling of motor, coupling assembling include linking bridge and connect in linking bridge is last.
Compared with the prior art, the white vehicle body structure static rigidity test device has the beneficial effects that:
because the base of establishing on the support frame includes connecting plate, first connecting block and second connecting block, first connecting block can rotate or be fixed with the connecting plate relatively, and the second connecting block can rotate or be fixed with first connecting block relatively, and the axis of rotation of first connecting block is perpendicular with the axis of rotation of second connecting block. Specifically, the relative rotation direction of the first connecting block and the connecting plate is the same as the left-right direction of the body-in-white structure, and the relative rotation direction of the second connecting block and the first connecting block is the same as the front-back direction of the body-in-white structure; therefore, when the connection mode of the connecting plate and the first connecting block is rotary connection and the connection mode of the first connecting block and the second connecting block is fixed connection, a vehicle body torsional rigidity test is carried out; when the connection mode of the connecting plate and the first connecting block is fixed connection and the connection mode of the first connecting block and the second connecting block is rotary connection, a bending rigidity test of the vehicle body is carried out. In addition, when a white vehicle body structure static rigidity test is carried out, the front suspension and the rear suspension of the white vehicle body structure are respectively installed on the front suspension installation upright post and the rear suspension installation upright post through the spherical hinge connection, so that the over-restraint of a vehicle body caused by welding is avoided, and the structure is simpler. Therefore, the invention not only can rapidly switch the vehicle body torsional rigidity test and the vehicle body bending rigidity test, but also can avoid the over-constraint of the vehicle body in the test process, thereby solving the problem of complex structure for realizing the bending and torsional test conversion in the existing test device.
Drawings
FIG. 1 is a schematic view of a prior art static stiffness test device for a body-in-white structure;
FIG. 2 is a schematic view of the entire test apparatus in the example of the present invention;
FIG. 3 is a schematic view of a front overhang mounting stud in an embodiment of the present invention;
FIG. 4 is a schematic view of a rear overhang mounting stud in an embodiment of the present invention;
fig. 5 is a partial schematic view of a stent in an embodiment of the invention.
In the figure, the position of the upper end of the main shaft,
the X direction is the front-back direction of the body-in-white, the Y direction is the left-right direction of the body-in-white, and the Z direction is the up-down direction of the body-in-white;
1a, a bracket, 1b, a bracket, 11, a beam, 12 and a support frame,
2. the oblique bar is connected with the connecting rod,
3. the rear suspension is provided with a vertical column,
4. the front suspension installation upright post 41, the rod piece 42, the base 421, the connecting plate 422, the first connecting block 423, the second connecting block 424, the first rotating shaft 425 and the second rotating shaft,
5. a support column for supporting the movable part of the movable part,
61. a first rod piece 62, a second rod piece 63, a snap ring,
7. the connecting assembly 71, the connecting bracket 72 and the connecting shaft.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but the information should not be limited to these terms, which are used only to distinguish the same type of information from each other. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present invention.
It should be noted that the drawings of the present embodiment are only schematic system drawings, and do not represent all the components of the present invention, and the core principle of the present embodiment is the same as that of the present embodiment.
Referring to fig. 1-3, an embodiment of the present invention provides a static stiffness test apparatus for a body-in-white structure, including a bracket 1b, and a first pillar mechanism and a second pillar mechanism that are symmetrically arranged; the bracket 1b comprises a cross beam 11 and a support frame 12, and the cross beam 11 is rotatably connected to the support frame 12; the first upright post mechanism and the second upright post mechanism both comprise a front suspension mounting upright post 4 and a rear suspension mounting upright post 3; the rear suspension mounting upright post 3 and the front suspension mounting upright post 4 are both provided with a ball hinge structure for connecting with a body-in-white structure; the front suspension mounting upright post 4 is arranged on the cross beam 11, the front suspension mounting upright post 4 comprises a rod piece 41 and a base 42, the base 42 is arranged on the cross beam 11, and the rod piece 41 is fixedly connected to the base 42; the base 42 includes a connection plate 421, a first connection block 422 and a second connection block 423, the first connection block 422 can rotate or be fixed relative to the connection plate 421, the second connection block 423 can rotate or be fixed relative to the first connection block 422, and a rotation axis of the first connection block 422 is perpendicular to a rotation axis of the second connection block 423.
Based on the technical scheme, the static rigidity test device for the body-in-white structure is optimized in the embodiment of the invention, during the test, the body-in-white structure is installed on the test device, and the heights of the cross beam, the front suspension installation upright post and the rear suspension installation upright post are adjusted to enable the body-in-white structure to be horizontally placed, wherein the front suspension installation upright post 4 and the rear suspension installation upright post 3 are in spherical hinge connection with the body-in-white structure, so that the movement of the body-in-white structure in the X, Y and Z directions is limited, namely the three translational degrees of freedom of the body-in-white structure are limited but the rotational degree of freedom of the joint is not limited, and the connection mode can enable the state of the body-in-white structure in the test to be in accordance with the actual vehicle running state, so that the accuracy of the test structure is high. When the connection manner of the connection plate 421 and the first connection block 422 is a rotational connection, and the connection manner of the first connection block 422 and the second connection block 423 is a fixed connection, referring to fig. 3, it can be known that the rotational freedom degree in the X direction of the front suspension of the body-in-white structure is limited, and the rotational freedom degree in the Y direction remains, so that the body torsional rigidity test is performed at this time; when the connection manner of the connection plate 421 and the first connection block 422 is fixed connection and the connection manner of the first connection block 422 and the second connection block 423 is rotational connection, it can be seen from fig. 3 that the rotational freedom degree in the Y direction of the white body structure front suspension is limited and the rotational freedom degree in the X direction is left, and therefore, the vehicle body bending rigidity test is performed at this time.
Referring to fig. 2, the base 42 preferably further includes a first rotating shaft 424, a second rotating shaft 425, a first fixing pin, and a second fixing pin. The first rotating shaft 424 penetrates the connecting plate 421 and the first connecting block 422, and the second rotating shaft 425 penetrates the first connecting block 422 and the second connecting block 423. The first fixing pin is inserted through the connecting plate 421 and the first connecting block 422, and the second fixing pin is inserted through the first connecting block 422 and the second connecting block 423. Therefore, the switching between the bending rigidity test of the automobile body and the torsional rigidity test of the automobile body can be realized through the mode of plugging the first fixing pin and the second fixing pin, the mode is simple in structure, the cost of the test device is reduced, and the connection is stable. Further, the first fixing pin and the second fixing pin are preferably of a semi-conical configuration.
Preferably, the support device further comprises two support columns 5, wherein the two support columns are arranged below the left side and the right side of the bracket 1b and are used for supporting two ends of the cross beam 11. Specifically, when the body-in-white structure is installed in the testing device, the height of the support 1b can be adjusted to be consistent in the left and right height dimensions, so that the body-in-white structure is integrally positioned on a horizontal plane, and the test is facilitated. It should be noted that the support column 5 needs to be removed when the test is performed, i.e. the support column 5 only plays a role of adjusting the bracket 1b and does not participate in the test process.
With reference to fig. 3-4, preferably, the rear suspension upright 3, the support pillar 5 and the front suspension upright 4 each comprise a first rod 61 and a second rod 62 coaxially arranged, the first rod 61 being movable in its axial direction with respect to the second rod 62. Further, the first rod 61 is a solid rod, the outer circumferential surface of the first rod is provided with an external thread, the second rod 62 is a hollow rod, the inner circumferential surface of the second rod is provided with an internal thread, and the first rod 61 and the second rod 62 are telescopically connected through the internal thread and the external thread. Therefore, the height of the rear suspension installation upright post 3, the height of the support pillar 5, the height of the front suspension installation upright post 4 and the height of the bracket 1b can be adjusted, so that the test device disclosed by the embodiment can be used for the static rigidity test of the body-in-white structure of various vehicle types, and the stability is high. Specifically, the lower end of the front overhang mounting post 4 is fixedly connected with the cross beam 11 by adopting bolt connection. In addition, a snap ring 63 is screwed to the first rod 61, and the maximum diameter of the snap ring 63 is smaller than the inner peripheral surface diameter of the second rod 62. Therefore, the stand column can be locked by screwing the clamp ring 63 after the height of the stand column is determined, the phenomenon that the inner threaded rod and the outer threaded rod of the stand column are loosened to cause movement is avoided, and the test precision is improved.
Preferably, a plurality of mounting holes are formed in the cross beam 11 and arranged along the directions of the two ends of the cross beam, the base 42 can be connected with any one of the mounting holes, so that the base 42 can move on the cross beam 11, and the static stiffness test of the body-in-white structure with different vehicle widths can be adapted to the test device by adjusting the positions of the left base 42 and the right base 42.
Further, be equipped with the coordinate scale on the crossbeam 11 along its length direction (be Y on the direction), preferably accurate coordinate scale, be convenient for fix a position fast when adjusting the distance about front overhang installation stand 4, improved test efficiency and simple operation nature when guaranteeing body in white structure installation accuracy.
Preferably, the connecting assemblies 7 for connecting the motors are respectively installed at the positions of the two ends of the cross beam 11, and each connecting assembly 7 comprises a connecting bracket 71 and a connecting shaft 72 connected to the connecting bracket 71. Specifically, the connecting assemblies 7 are arranged at the positions, 1 meter away from the left end and the right end of the hinge center of the support 1b respectively, and can be used as torsional rigidity test loading points, so that the loading motors can be installed when a body-in-white structure is subjected to left torsional rigidity tests and right torsional rigidity tests, and the calculation of the moment and the calculation of the final rigidity value are facilitated. Specifically, the motor may be suspended vertically below the connecting shaft 72, so that the stiffness test of the left torsion and the right torsion may be performed by a loading action of the motor.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (8)
1. A static rigidity test device for a body-in-white structure is characterized by comprising a bracket, a first upright post mechanism and a second upright post mechanism, wherein the first upright post mechanism and the second upright post mechanism are symmetrically arranged;
the support comprises a cross beam and a support frame, and the cross beam is rotatably connected to the support frame;
the first upright post mechanism and the second upright post mechanism respectively comprise a front suspension mounting upright post and a rear suspension mounting upright post;
the rear suspension mounting upright post and the front suspension mounting upright post are both provided with spherical hinge structures used for being connected with a body-in-white structure;
the front suspension mounting upright is arranged on the cross beam and comprises a rod piece and a base, the base is arranged on the cross beam, and the rod piece is fixedly connected to the base;
the base comprises a connecting plate, a first connecting block, a second connecting block, a first rotating shaft, a second rotating shaft, a first fixing pin and a second fixing pin, the first connecting block can rotate or be fixed relative to the connecting plate, the second connecting block can rotate or be fixed relative to the first connecting block, and the rotating axis of the first connecting block is perpendicular to the rotating axis of the second connecting block;
the first rotating shaft penetrates through the connecting plate and the first connecting block, and the second rotating shaft penetrates through the first connecting block and the second connecting block;
the first fixing pin can penetrate through the connecting plate and the first connecting block in a pluggable mode, and the second fixing pin can penetrate through the first connecting block and the second connecting block in a pluggable mode.
2. The static rigidity test device for a white vehicle body structure according to claim 1, further comprising two support columns, wherein the two support columns are arranged below the left side and the right side of the bracket and are used for supporting two ends of the cross beam.
3. The static rigidity testing apparatus for a body-in-white structure according to claim 2, wherein each of the rear suspension mounting pillar, the support pillar and the front suspension mounting pillar includes a first rod member and a second rod member coaxially arranged, the first rod member being movable relative to the second rod member in an axial direction thereof.
4. The static rigidity test device for a body-in-white structure as claimed in claim 3, wherein the first bar is a solid bar, the outer peripheral surface of the first bar is externally threaded, the second bar is a hollow bar, the inner peripheral surface of the second bar is internally threaded, and the first bar and the second bar are threadedly connected.
5. The static rigidity test device for a body-in-white structure according to claim 4, wherein a snap ring is screw-connected to the first rod member, and the maximum diameter of the snap ring is smaller than the diameter of the inner peripheral surface of the second rod member.
6. A white vehicle body structure static rigidity test device according to claim 1, wherein a plurality of mounting holes are arranged on the cross beam along the directions of the two ends of the cross beam, and the base can be connected with any one of the mounting holes.
7. The static rigidity test device for a body-in-white structure as claimed in claim 1, wherein the cross member is provided with a coordinate scale along its length.
8. The static rigidity test device for the white vehicle body structure according to claim 1, wherein the positions of two ends of the cross beam are respectively provided with a connecting component for connecting a motor, and the connecting component comprises a connecting bracket and a connecting shaft connected to the connecting bracket.
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| CN202011341615.2A CN112504693B (en) | 2020-11-25 | 2020-11-25 | Static rigidity test device for body-in-white structure |
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| CN202011341615.2A CN112504693B (en) | 2020-11-25 | 2020-11-25 | Static rigidity test device for body-in-white structure |
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| CN112504693B true CN112504693B (en) | 2023-01-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113418667B (en) * | 2021-06-01 | 2022-11-15 | 东风柳州汽车有限公司 | Auxiliary loading device |
| CN113340612A (en) * | 2021-06-04 | 2021-09-03 | 一汽解放汽车有限公司 | Static rigidity test platform for white vehicle body of vehicle |
| CN113504054B (en) * | 2021-06-28 | 2022-07-22 | 东风柳州汽车有限公司 | Vehicle cab road simulation test device and system |
| CN113865881A (en) * | 2021-08-31 | 2021-12-31 | 东风柳州汽车有限公司 | Rigidity test device |
| CN114563198A (en) * | 2022-03-03 | 2022-05-31 | 北京汽车集团越野车有限公司 | Suspension device |
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