CN118624243A - System and method for testing torsional rigidity of whole vehicle - Google Patents
System and method for testing torsional rigidity of whole vehicle Download PDFInfo
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- CN118624243A CN118624243A CN202410836276.7A CN202410836276A CN118624243A CN 118624243 A CN118624243 A CN 118624243A CN 202410836276 A CN202410836276 A CN 202410836276A CN 118624243 A CN118624243 A CN 118624243A
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Abstract
The invention discloses a system and a method for testing torsional rigidity of a whole vehicle, which belong to the field of torsional rigidity testing of the whole vehicle and comprise three supporting seats with fixed heights and an electric supporting seat with adjustable heights, wherein force sensor testing platforms are respectively arranged on the three supporting seats and the electric supporting seat, the four force sensor testing platforms are used for supporting four tires of the whole vehicle to be tested, displacement sensors are respectively arranged on front fender plates and rear wheel arch sheet metals corresponding to front wheels and rear wheels of the whole vehicle to be tested, and the second supporting seat corresponds to the left front wheel of the whole vehicle to be tested. The invention discloses a system and a method for testing the torsional rigidity of a whole vehicle, which are convenient for a user to judge the performance of the whole vehicle by taking the torsional rigidity of the whole vehicle as a specific quantized index, and solve the problems that in the prior art, in order to collect the torsional rigidity of a white vehicle body assembly, the vehicle is required to be disassembled into the white vehicle body assembly, and meanwhile, the measurement work can be realized by preparing corresponding tool clamps, the acquisition period is long, and the tool purchasing investment is large. The performance of the white car body assembly can only be reflected by the collection of the prior art, and the performance of the white car body assembly cannot be represented in use, so that the white car body assembly is provided for a user as an evaluation basis of the design and manufacture level of a car.
Description
Technical Field
The invention discloses a system and a method for testing torsion rigidity of a whole vehicle, and belongs to the field of torsion rigidity testing of whole vehicles.
Background
The torsional rigidity of the automobile body refers to the capability of the automobile body of the automobile to resist elastic deformation when the automobile body is subjected to external force, and is an important index for measuring the structural strength of the automobile body of the automobile. At present, the acquisition of the torsional rigidity of the automobile body is often carried out only in a specific place by means of large instruments and equipment, and the automobile body-in-white assembly is tested. This means that if it is desired to obtain the torsional rigidity of a vehicle, it is necessary to remove all the parts of the vehicle to perform the relevant test, which is time-consuming and laborious. Meanwhile, the feeling obtained by the user in the use of the vehicle is caused by the torsional rigidity of the whole vehicle and is not only influenced by the white vehicle body, so that the user more hopefully obtains the torsional rigidity of the whole vehicle from the perspective of the user.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a whole vehicle torsional rigidity testing system and method, which solve the problems that the torsional rigidity of a white vehicle body assembly is acquired, the vehicle is required to be disassembled into the white vehicle body assembly, the measurement work can be realized only by preparing corresponding fixture clamps, the acquisition period is long, the fixture purchase investment is large, and the performance of the white vehicle body assembly can only be reflected in the prior art.
The technical scheme of the invention is as follows:
According to a first aspect of the embodiment of the invention, a torsion rigidity testing system of a whole vehicle is provided, which comprises three supporting seats with fixed heights and an electric supporting seat with adjustable heights, wherein force sensor testing platforms are respectively arranged on the three supporting seats and the electric supporting seat, the four force sensor testing platforms are used for supporting four tires of the whole vehicle to be tested, displacement sensors are respectively arranged on front fender corresponding to front wheels and rear fender corresponding to rear wheels of the whole vehicle to be tested and on front left wheels of the whole vehicle to be tested, and the second supporting seat corresponds to front left wheels of the whole vehicle to be tested.
Preferably, the four force sensor test platforms, the electric supporting seat and the four displacement sensors are respectively and electrically connected with the controller.
Preferably, the three support seats and the electric support seat have an initial height of 800mm.
Preferably, the controller is configured to send a test height lowering instruction to the electric support seat after receiving a test instruction;
The electric supporting seat is used for receiving the instruction of lowering the test height and executing corresponding operation;
The four force sensor test platforms are used for collecting stress data of the four tires and sending the stress data to the controller;
The four displacement sensors are used for collecting displacement data of the four tires and sending the displacement data to the controller;
The controller is used for obtaining displacement data and stress data of the four tires and calculating to obtain the torsional rigidity of the whole vehicle.
According to a second aspect of the embodiment of the present invention, there is provided a method for testing torsional rigidity of a whole vehicle, which is applied to the system for testing torsional rigidity of a whole vehicle according to the first aspect, including:
the four force sensor testing platforms collect initial stress data of the four tires and send the initial stress data to the controller;
The four displacement sensors collect initial displacement data of the four tires and send the initial displacement data to the controller;
After receiving a test instruction, the controller sends an instruction for reducing the test height to the electric supporting seat;
the electric supporting seat receives the instruction of lowering the test height and executes corresponding operation to enable the left front wheel to be in a suspended state;
The four force sensor testing platforms collect the testing stress data of the four tires and send the testing stress data to the controller;
the four displacement sensors collect test displacement data of the four tires and send the test displacement data to the controller;
The controller obtains test displacement data and test stress data of the four tires, and calculates according to the initial stress data and the initial displacement data of the four tires to obtain the torsional rigidity of the whole vehicle.
Preferably, the controller obtains test displacement data and test stress data of the four tires, and calculates to obtain torsional rigidity of the whole vehicle according to initial stress data and initial displacement data of the four tires, including:
the counterclockwise rotation moment of the front overhang and the clockwise rotation moment of the rear overhang of the whole automobile are obtained through formulas (1) and (2):
Wherein: t 1 is counterclockwise rotation moment received by the front suspension of the whole vehicle, T 2 is clockwise rotation moment received by the rear suspension F 1 is left front wheel initial stress data, F 2 is right front wheel initial stress data, F 3 is left rear wheel initial stress data, F 4 is right rear wheel initial stress data, F '1 is left front wheel test stress data, F' 2 is right front wheel test stress data, F '3 is left rear wheel test stress data, F' 4 is right rear wheel test stress data, B 1 is front wheel track, and B 2 is rear wheel track;
the front suspension torsion angle and the rear suspension torsion angle are obtained by formulas (3) and (4):
Wherein: θ 1 is a front suspension torsion angle, θ 2 is a rear suspension torsion angle, L 1 is a left-right pitch of a front suspension displacement sensor, L 2 is a left-right pitch of a rear suspension displacement sensor, W 1 is left front wheel initial displacement data, W 2 is right front wheel initial displacement data, W 3 is left rear wheel initial displacement data, W 4 is right rear wheel initial displacement data, W '1 is left front wheel test displacement data, W' 2 is right front wheel test displacement data, W '3 is left rear wheel test displacement data, W' 4 is right rear wheel test displacement data,
And obtaining the torsion rigidity of the whole vehicle according to the anticlockwise rotation moment of the front suspension, the clockwise rotation moment of the rear suspension, the front suspension torsion angle and the rear suspension torsion angle through a formula (5):
Wherein: GI is the torsional rigidity of the whole vehicle.
Compared with the prior art, the invention has the following beneficial effects:
The invention discloses a system and a method for testing the torsional rigidity of a whole vehicle, which are convenient for a user to judge the performance of the whole vehicle by taking the torsional rigidity of the whole vehicle as a specific quantized index, and solve the problems that in the prior art, in order to collect the torsional rigidity of a white vehicle body assembly, the vehicle is required to be disassembled into the white vehicle body assembly, and meanwhile, the measurement work can be realized by preparing corresponding tool clamps, the acquisition period is long, and the tool purchasing investment is large. The performance of the white car body assembly can only be reflected by the collection of the prior art, and the performance of the white car body assembly cannot be represented in use, so that the white car body assembly is provided for a user as an evaluation basis of the design and manufacture level of a car.
Drawings
FIG. 1 is a block diagram of a system for testing torsional stiffness of a finished vehicle according to the present invention.
Fig. 2 is a schematic diagram of a test for testing a whole vehicle in the torsion rigidity test system of the whole vehicle.
Fig. 3 is a schematic diagram of a test for testing a whole vehicle in the torsion rigidity test system of the whole vehicle.
Detailed Description
The invention is further described below with reference to fig. 1-3:
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1-3, the first embodiment of the present invention provides a torsion rigidity testing system for a whole vehicle based on the prior art, which includes three supporting seats with fixed heights and an electric supporting seat with adjustable heights, wherein force sensor testing platforms are respectively placed on the three supporting seats and the electric supporting seat, the four force sensor testing platforms are used for supporting four tires of the whole vehicle to be tested, displacement sensors are respectively placed on front fender panels and rear wheel arch sheet metals corresponding to front wheels and rear wheels of the whole vehicle to be tested, and the second supporting seat corresponds to the left front wheel of the whole vehicle to be tested. The four force sensor test platforms, the electric supporting seat and the four displacement sensors are respectively and electrically connected with the controller. The three support seats and the electric support seat have an initial height of 800mm.
The controller is used for sending a test height lowering instruction to the electric supporting seat after receiving the test instruction; the electric supporting seat is used for receiving the instruction of lowering the test height and executing corresponding operation; the four force sensor test platforms are used for collecting stress data of the four tires and sending the stress data to the controller; the four displacement sensors are used for collecting displacement data of the four tires and sending the displacement data to the controller; the controller is used for obtaining displacement data and stress data of the four tires and calculating to obtain the torsional rigidity of the whole vehicle.
The second embodiment of the invention provides a method for testing torsional rigidity of a whole vehicle on the basis of the first embodiment, which comprises the following steps:
The four force sensor testing platforms collect initial stress data of the four tires and send the initial stress data to the controller; the four displacement sensors collect initial displacement data of the four tires and send the initial displacement data to the controller; after receiving the test instruction, the controller sends an instruction for reducing the test height to the electric supporting seat; the electric supporting seat receives the instruction of lowering the test height and executes corresponding operation to enable the left front wheel to be in a suspended state; the four force sensor test platforms collect test stress data of the four tires and send the test stress data to the controller; the four displacement sensors collect test displacement data of the four tires and send the test displacement data to the controller; the controller obtains test displacement data and test stress data of the four tires, and calculates according to the initial stress data and the initial displacement data of the four tires to obtain the torsion rigidity of the whole vehicle, wherein:
the counterclockwise rotation moment of the front overhang and the clockwise rotation moment of the rear overhang of the whole automobile are obtained through formulas (1) and (2):
Wherein: t 1 is counterclockwise rotation moment received by the front suspension of the whole vehicle, T 2 is clockwise rotation moment received by the rear suspension F 1 is left front wheel initial stress data, F 2 is right front wheel initial stress data, F 3 is left rear wheel initial stress data, F 4 is right rear wheel initial stress data, F '1 is left front wheel test stress data, F' 2 is right front wheel test stress data, F '3 is left rear wheel test stress data, F' 4 is right rear wheel test stress data, B 1 is front wheel track, and B 2 is rear wheel track;
the front suspension torsion angle and the rear suspension torsion angle are obtained by formulas (3) and (4):
Wherein: θ 1 is a front suspension torsion angle, θ 2 is a rear suspension torsion angle, L 1 is a left-right pitch of a front suspension displacement sensor, L 2 is a left-right pitch of a rear suspension displacement sensor, W 1 is left front wheel initial displacement data, W 2 is right front wheel initial displacement data, W 3 is left rear wheel initial displacement data, W 4 is right rear wheel initial displacement data, W '1 is left front wheel test displacement data, W' 2 is right front wheel test displacement data, W '3 is left rear wheel test displacement data, W' 4 is right rear wheel test displacement data,
And obtaining the torsion rigidity of the whole vehicle according to the anticlockwise rotation moment of the front suspension, the clockwise rotation moment of the rear suspension, the front suspension torsion angle and the rear suspension torsion angle through a formula (5):
Wherein: GI is the torsional rigidity of the whole vehicle.
Although embodiments of the invention have been disclosed above, they are not limited to the use listed in the specification and embodiments. It can be applied to various fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (6)
1. The torsion rigidity testing system of the whole vehicle is characterized by comprising three supporting seats with fixed heights and an electric supporting seat with adjustable heights, wherein force sensor testing platforms are respectively arranged on the three supporting seats and the electric supporting seat, the four force sensor testing platforms are used for supporting four tires of the whole vehicle to be tested, displacement sensors are respectively arranged on front fender plates and rear fender panels corresponding to front wheels and rear fender panels of the whole vehicle to be tested, and the second supporting seat corresponds to a left front wheel of the whole vehicle to be tested.
2. The system for testing the torsional rigidity of the whole vehicle according to claim 1, wherein four force sensor testing platforms, an electric supporting seat and four displacement sensors are respectively and electrically connected with the controller.
3. A vehicle torsional rigidity testing system according to claim 1 or 2, wherein the three support seats are 800mm in height and the initial height of the electric support seat.
4. A vehicle torsional rigidity testing system according to claim 3, wherein the controller is configured to send a test height lowering instruction to the electric support after receiving the test instruction;
The electric supporting seat is used for receiving the instruction of lowering the test height and executing corresponding operation;
The four force sensor test platforms are used for collecting stress data of the four tires and sending the stress data to the controller;
The four displacement sensors are used for collecting displacement data of the four tires and sending the displacement data to the controller;
The controller is used for obtaining displacement data and stress data of the four tires and calculating to obtain the torsional rigidity of the whole vehicle.
5. A method for testing torsional rigidity of a whole vehicle, applied to the system for testing torsional rigidity of a whole vehicle as claimed in any one of claims 1 to 4, comprising:
the four force sensor testing platforms collect initial stress data of the four tires and send the initial stress data to the controller;
The four displacement sensors collect initial displacement data of the four tires and send the initial displacement data to the controller;
After receiving a test instruction, the controller sends an instruction for reducing the test height to the electric supporting seat;
the electric supporting seat receives the instruction of lowering the test height and executes corresponding operation to enable the left front wheel to be in a suspended state;
The four force sensor testing platforms collect the testing stress data of the four tires and send the testing stress data to the controller;
the four displacement sensors collect test displacement data of the four tires and send the test displacement data to the controller;
The controller obtains test displacement data and test stress data of the four tires, and calculates according to the initial stress data and the initial displacement data of the four tires to obtain the torsional rigidity of the whole vehicle.
6. The method for testing the torsional rigidity of the whole vehicle according to claim 5, wherein the controller obtains test displacement data and test stress data of the four tires, and calculates the torsional rigidity of the whole vehicle according to the initial stress data and the initial displacement data of the four tires, and the method comprises the following steps:
the counterclockwise rotation moment of the front overhang and the clockwise rotation moment of the rear overhang of the whole automobile are obtained through formulas (1) and (2):
Wherein: t 1 is counterclockwise rotation moment received by the front suspension of the whole vehicle, T 2 is clockwise rotation moment received by the rear suspension F 1 is left front wheel initial stress data, F 2 is right front wheel initial stress data, F 3 is left rear wheel initial stress data, F 4 is right rear wheel initial stress data, F '1 is left front wheel test stress data, F' 2 is right front wheel test stress data, F '3 is left rear wheel test stress data, F' 4 is right rear wheel test stress data, B 1 is front wheel track, and B 2 is rear wheel track;
the front suspension torsion angle and the rear suspension torsion angle are obtained by formulas (3) and (4):
Wherein: θ 1 is a front suspension torsion angle, θ 2 is a rear suspension torsion angle, L 1 is a left-right pitch of a front suspension displacement sensor, L 2 is a left-right pitch of a rear suspension displacement sensor, W 1 is left front wheel initial displacement data, W 2 is right front wheel initial displacement data, W 3 is left rear wheel initial displacement data, W 4 is right rear wheel initial displacement data, W '1 is left front wheel test displacement data, W' 2 is right front wheel test displacement data, W '3 is left rear wheel test displacement data, W' 4 is right rear wheel test displacement data,
And obtaining the torsion rigidity of the whole vehicle according to the anticlockwise rotation moment of the front suspension, the clockwise rotation moment of the rear suspension, the front suspension torsion angle and the rear suspension torsion angle through a formula (5):
Wherein: GI is the torsional rigidity of the whole vehicle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410836276.7A CN118624243A (en) | 2024-06-26 | 2024-06-26 | System and method for testing torsional rigidity of whole vehicle |
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| CN202410836276.7A CN118624243A (en) | 2024-06-26 | 2024-06-26 | System and method for testing torsional rigidity of whole vehicle |
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