CN111999017B - Vehicle body rigidity test system and method - Google Patents
Vehicle body rigidity test system and method Download PDFInfo
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- CN111999017B CN111999017B CN201910375439.5A CN201910375439A CN111999017B CN 111999017 B CN111999017 B CN 111999017B CN 201910375439 A CN201910375439 A CN 201910375439A CN 111999017 B CN111999017 B CN 111999017B
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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
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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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
- G01M13/00—Testing of machine parts
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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
Abstract
The invention discloses a vehicle body rigidity test system and a method thereof, wherein the system comprises a vehicle body supporting mechanism and a load loading mechanism; the vehicle body supporting mechanism comprises a supporting table, a supporting rod assembly and a suspension mounting piece, wherein the bottom end of the supporting rod assembly is detachably mounted on the supporting table, the top end of the supporting rod assembly is movably connected with the bottom end of the suspension mounting piece, and the top end of the suspension mounting piece is connected with a suspension mounting point of a vehicle body; the load loading mechanism comprises a driving device and a steel wire rope, one end of the steel wire rope is connected with the driving device, and the other end of the steel wire rope is connected with a set traction point on the vehicle body. The test system is more simplified, higher in integration level, higher in loading precision and better in reliability, can be used for other tests, saves the cost of test equipment, and enlarges the application range of the test system.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a vehicle body rigidity test system and a vehicle body rigidity test method.
Background
The body rigidity test is an important component in automobile development test. The method mainly comprises the steps of firmly fixing a vehicle body on a steel platform through a fixing jig under a laboratory environment, applying a certain load to the vehicle body through special equipment according to a specified mode, collecting relevant data of key points, calculating a corresponding rigidity value of the vehicle body through the relevant data and relevant parameters of the vehicle body, and judging whether the rigidity value of the vehicle body meets requirements or not.
Generally, the rigidity test equipment of the vehicle body is a support type test system consisting of a front suspension T-shaped frame, a front suspension mounting mechanism, an adjustable groove plate, a rear suspension mounting frame, a servo motor loading gear box, a speed reducer and the like, is connected with the vehicle body through a suspension mounting point, can only be used for part of vehicle body rigidity tests, needs other special test device systems when other vehicle body strength tests are carried out, needs to occupy a special steel platform for mounting and placing the test equipment due to inconvenient disassembly and assembly and debugging, is poor in adaptability, and occupies precious test space and steel platform resources. Meanwhile, the load loading mechanism is limited by structures and the like, has single use and poor adaptability, and cannot be used for other tests. Moreover, the vehicle body twisting implementation is complex.
Disclosure of Invention
The invention aims to overcome the defects in the background technology and provide a vehicle body rigidity test system and a method thereof.
In order to achieve the aim, the invention designs a vehicle body rigidity test system, which comprises a vehicle body supporting mechanism and a load loading mechanism, wherein the vehicle body supporting mechanism is arranged on the vehicle body;
the vehicle body supporting mechanism comprises a supporting table, a supporting rod assembly and a suspension mounting piece, wherein the bottom end of the supporting rod assembly is detachably mounted on the supporting table, the top end of the supporting rod assembly is movably connected with the bottom end of the suspension mounting piece, and the top end of the suspension mounting piece is connected with a suspension mounting point of a vehicle body;
the load loading mechanism comprises a driving device and a steel wire rope, one end of the steel wire rope is connected with the driving device, and the other end of the steel wire rope is connected with a set traction point on the vehicle body.
In the technical scheme, the supporting rod assembly comprises a supporting cylinder and a height adjusting rod, the bottom end of the supporting cylinder is detachably connected with the supporting table, the lower portion of the height adjusting rod is screwed into the supporting cylinder and is in threaded connection with the supporting cylinder, and the top end of the height adjusting rod is movably connected with the suspension mounting piece.
In the technical scheme, a ball-and-socket universal joint is arranged between the height adjusting rod and the suspension mounting part, two ends of the ball-and-socket universal joint are respectively in threaded connection with the height adjusting rod and the suspension mounting part, and spring gaskets are arranged at joints of two ends of the ball-and-socket universal joint.
In the above technical solution, the suspension mounting member includes a mounting sleeve, a mounting disc, a mounting rod, a mounting ring, and a nut;
the upper end of the ball-and-socket universal joint is screwed into the lower end of the mounting sleeve and is in threaded connection with the lower end of the mounting sleeve, the upper end of the mounting sleeve is fixedly connected with the lower end of the mounting disc, the middle of the upper end of the mounting disc is fixedly connected with the lower end of the mounting rod, and the mounting ring and the nut are sleeved on the mounting rod.
In the technical scheme, the lower end of the ball-and-socket universal joint is provided with a connecting sleeve, and the upper end of the height adjusting rod is screwed into the connecting sleeve and is in threaded connection with the connecting sleeve; the height adjusting rod is sleeved with a locking ring used for locking the height adjusting rod on the supporting cylinder.
In the technical scheme, the support platform is a rectangular box-shaped structure with openings at two ends formed by welding four steel plates, and each steel plate is provided with a plurality of screw holes; the bottom end of the supporting cylinder is provided with a base, a plurality of through holes are formed in the base, and the base is installed on the supporting table through bolts;
the suspension mounting points comprise a first front suspension mounting point, a second front suspension mounting point, a first rear suspension mounting point and a second rear suspension mounting point, the first front suspension mounting point and the second front suspension mounting point are arranged on the front side of the automobile body, and the first rear suspension mounting point and the second rear suspension mounting point are arranged on the rear side of the automobile body.
In the above technical scheme, the load loading mechanism further comprises a fixed pulley, and the steel wire rope is connected with the fixed pulley in a winding manner.
The invention also provides a vehicle body rigidity test method, which comprises a vehicle body torsional rigidity test, wherein the vehicle body torsional rigidity test comprises the following steps: three groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point, a first rear suspension mounting point and a second rear suspension mounting point of a vehicle body to support the vehicle body, a load loading mechanism is connected with the second front suspension mounting point, a specified torsional moment is loaded on the vehicle body through the load loading mechanism, deformation displacement is detected, and torsional rigidity is calculated according to detected data.
In the technical scheme, the test method further comprises a vehicle body bending torsional rigidity test, wherein the vehicle body bending torsional rigidity test comprises the following steps: the four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point, a second front suspension mounting point, a first rear suspension mounting point and a second rear suspension mounting point of a vehicle body to support the vehicle body, two groups of load loading mechanisms are respectively connected with bending load applying jigs arranged on two sides of the middle part of the vehicle body, the vehicle body is loaded with specified torsional moment through the load loading mechanisms, deformation displacement is detected, and bending rigidity is calculated according to detected data.
In the above technical scheme, the method further comprises a traction hook static tension test, wherein the traction hook static tension test comprises the following steps: the four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point, a second front suspension mounting point, a first rear suspension mounting point and a second rear suspension mounting point of a vehicle body to support the vehicle body, the load loading mechanism is connected with a vehicle body towing hook, and the load loading mechanism loads specified pulling force on the vehicle body to detect deformation displacement.
Compared with the prior art, the invention has the following advantages:
firstly, the vehicle body rigidity test system adopts mutually independent vehicle body supporting mechanisms with adjustable height to replace structures such as T-shaped frames and the like in the traditional test system, so that the vehicle can be more conveniently and rapidly leveled, the vehicle body rigidity test system is convenient to disassemble and store, long-term occupation of a steel platform by traditional vehicle body rigidity test equipment is avoided, and the test system can also be applied to tests such as vehicle door sinking, towing hook static tension and the like due to the large adjusting range of the supporting fixed height.
Secondly, the load loading mechanism comprises a driving device, a high-strength steel wire rope and a fixed pulley, and compared with a load applying system formed by assembling and integrating a servo motor, a speed reducer, a loading gear box, control equipment and the like which are purchased by a traditional test equipment manufacturer, the load applying mechanism is simpler in equipment structure, higher in integration level, higher in loading precision and better in reliability, and meanwhile, the driving device can be used for other tests, so that the cost of test equipment is saved, and the application range of the test system is expanded.
Thirdly, the test system horizontally installs two electric actuating cylinders on a steel platform in the bending rigidity test of the vehicle body, and applies load to the vehicle body through two groups of fixed pulleys and high-strength steel wire ropes installed on the steel platform. Horizontal tension of the driving device is converted into vertical downward load of the vehicle body through the fixed pulley, so that a mode that a weight hanging or servo motor loading device is used for loading in a bending rigidity test of the traditional test equipment is replaced, the equipment installation and arrangement mode is more flexible, and the loading precision is higher.
Fourthly, in the test system, in a torsional rigidity test of the vehicle body, two rear suspension mounting points and one front suspension mounting point on the vehicle body are respectively fixed and restrained by using three vehicle body supporting and fixing jigs, a driving device horizontally mounted on a steel platform is adopted, the driving device is connected to the rest front suspension mounting point on the vehicle body through a group of fixed pulleys and high-strength steel wire ropes mounted on the steel platform, the horizontal tension of the driving device is converted into vertical downward load on the front suspension mounting point on one side through the fixed pulleys, so that the vehicle body is twisted, the two rear suspension mounting points are fixed in the traditional test equipment, a loading device is used for driving a front suspension T-shaped frame simultaneously connected with the two front suspension mounting points of the vehicle body, and the vehicle body is driven to rotate, so that the mode of vehicle body twisting is completed. Under the new torsion mode, only the deformation of a single side needs to be measured and the calculation of the torsion angle can be completed, so that the number of required displacement sensors is reduced, the time required by test preparation is shortened, and the workload of data processing is reduced.
Drawings
FIG. 1 is a schematic structural view of a vehicle body support mechanism;
FIG. 2 is a disassembled schematic view of the vehicle body support mechanism shown in FIG. 1;
FIG. 3 is a schematic structural view of a load loading mechanism;
FIG. 4 is a schematic view at the time of a vehicle body torsional rigidity test;
FIG. 5 is a schematic view at the time of a bending torsional rigidity test of a vehicle body;
FIG. 6 is a schematic illustration of a draw hook static tensile test;
wherein: 1-supporting table, 1.1-steel plate, 1.2-screw hole, 2-supporting rod component, 2.1-supporting cylinder, 2.2-height adjusting rod, 2.3-base, 2.4-through hole, 3-suspension mounting component, 3.1-mounting sleeve, 3.2-mounting disk, 3.3-mounting rod, 3.4-mounting ring and 3.5-nut, 4-driving device, 5-steel wire rope, 6-ball-and-socket universal joint, 6.1-connecting sleeve, 7-spring washer, 8-locking ring, 9-fixed pulley, 10.1-first front suspension mounting point, 10.2-second front suspension mounting point, 10.3-first rear suspension mounting point, 10.4-second rear suspension mounting point, 11-bending load applying jig, 12-car body towing hook and 13-mounting platform.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
A vehicle body rigidity test system comprises a vehicle body supporting mechanism and a load loading mechanism. As shown in fig. 1, the vehicle body supporting mechanism comprises a supporting table 1, a supporting rod assembly 2 and a suspension mounting piece 3, wherein the bottom end of the supporting rod assembly 2 is detachably mounted on the supporting table 1, the top end of the supporting rod assembly 2 is movably connected with the bottom end of the suspension mounting piece 3, and the top end of the suspension mounting piece 3 is connected with a suspension mounting point of a vehicle body;
as shown in fig. 2, the support rod assembly 2 includes a support cylinder 2.1 and a height adjusting rod 2.2, the bottom end of the support cylinder 2.1 is detachably connected to the support table 1, the lower portion of the height adjusting rod 2.2 is screwed into the support cylinder 2.1 and is in threaded connection with the support cylinder, and the top end of the height adjusting rod 2.2 is movably connected to the suspension mounting member 3. The supporting cylinder 2.1 is internally provided with an internal thread, the height adjusting rod 2.2 is provided with an external thread, and after the supporting cylinder and the height adjusting rod are assembled together, the supporting height can be further changed by rotating the height adjusting rod 2.2.
A ball-and-socket universal joint 6 is arranged between the height adjusting rod 2.2 and the suspension mounting part 3, two ends of the ball-and-socket universal joint 6 are in threaded connection with the height adjusting rod 2.2 and the suspension mounting part 3 respectively, and spring gaskets 7 are arranged at joints of two ends of the ball-and-socket universal joint 6. Height adjusting rod 2.2 is connected through ball-and-socket universal joint 6 with suspension installed part 3, makes suspension installed part 3 possess the swing allowance of certain angle and adapts to different motorcycle types and experimental demand, and suspension installed part 3 possesses different length specifications simultaneously and requires the requirement to holding height and swing allowance with the adaptation different motorcycle types and experiment.
The lower end of the ball-and-socket universal joint 6 is provided with a connecting sleeve 6.1, and the upper end of the height adjusting rod 2.2 is screwed into the connecting sleeve 6.1 and is in threaded connection with the connecting sleeve; the height adjusting rod 2.2 is sleeved with a locking ring 8 used for locking the height adjusting rod on the supporting cylinder 2.1. The locking ring 8 is hollow cylinder shape, and locking ring 8 assembles on height-adjusting pole 2.2, and possesses the internal thread with height-adjusting pole 2.2's external screw thread assorted, after adjusting to suitable height, rotates downwards and screws up locking ring 8, increases the axial force and prevents not hard up.
The supporting table 1 is a rectangular box-shaped structure with two open ends formed by welding four steel plates 1.1, and each steel plate 1.1 is provided with a plurality of screw holes 1.2; the bottom of a support section of thick bamboo 2.1 is provided with base 2.3, be provided with a plurality of through-hole 2.4 on the base 2.3, base 2.3 passes through the bolt and installs on a supporting bench 1. The supporting table 1 not only has different height specifications to meet different height requirements, but also has screw holes on four sides, and the same supporting table 1 can obtain different supporting heights through different placing modes.
The suspension mounting part 3 comprises a mounting sleeve 3.1, a mounting disc 3.2, a mounting rod 3.3, a mounting ring 3.4 and a nut 3.5; the upper end screw in of ball socket universal joint 6 installs the lower extreme of sleeve 3.1 rather than threaded connection, the upper end of installation sleeve 3.1 and the lower extreme fixed connection of mounting disc 3.2, the upper end middle part of mounting disc 3.2 and the lower extreme fixed connection of installation pole 3.3, the cover is established on installation pole 3.3 to collar 3.4 and nut 3.5. In use, according to different test types and vehicle types, the supporting platforms 1 with corresponding specifications or different fixing surfaces of the same supporting platform 1 and the suspension mounting parts 3 with corresponding specifications are selected to form a whole set of vehicle body supporting mechanism meeting supporting requirements together with other components.
The suspension mounting points comprise a first front suspension mounting point 10.1, a second front suspension mounting point 10.2, a first rear suspension mounting point 10.3 and a second rear suspension mounting point 10.4, the first front suspension mounting point 10.1 and the second front suspension mounting point 10.2 are arranged on the front side of the vehicle body, and the first rear suspension mounting point 10.3 and the second rear suspension mounting point 10.4 are arranged on the rear side of the vehicle body. In general, 3 or 4 sets of vehicle body supporting mechanisms are respectively connected with the mounting platform 13 and a suspension mounting point on the vehicle body to realize the functions of supporting and fixing the vehicle body, and after the vehicle body is connected with the fixing device, the height and the horizontal condition of the vehicle body can be further adjusted through the supporting rod assembly 2 and the locking ring 8.
As shown in fig. 3, the load loading mechanism includes a driving device 4 and a steel wire rope 5, one end of the steel wire rope 5 is connected to the driving device 4, and the other end is connected to a set traction point on the vehicle body, and the driving device 4 may be an electric cylinder. The load loading mechanism further comprises a fixed pulley 9, and the steel wire rope 5 is connected with the fixed pulley 9 in a winding mode. According to different tests, different jigs are needed to be matched, wherein two groups of load applying devices are needed for the vehicle body bending test and are respectively arranged on two sides of the vehicle body; other tests such as a vehicle body torsion test and the like need a group of load applying devices, the arrangement modes are different according to different tests, and the direction of force is not converted by a fixed pulley in part of the tests.
As shown in fig. 4, a vehicle body rigidity test method includes a vehicle body torsional rigidity test, and the vehicle body torsional rigidity test includes the following steps:
1) three groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point 10.1, a first rear suspension mounting point 10.3 and a second rear suspension mounting point 10.4 of a vehicle body to support the vehicle body;
2) a load loading mechanism is adopted to be connected with a second front suspension mounting point 10.2, a torsional load loading jig is mounted at the second front suspension mounting point 10.2, the lower end of the torsional load loading jig is connected with a steel wire rope 5, a driving device 4 and a fixed pulley 9 are mounted on a mounting platform 13, the steel wire rope 5 penetrates through the fixed pulley 9 and is connected with the front end of the driving device 4, the position of the fixed pulley 9 is adjusted to ensure that the steel wire rope 5 is vertical to the part connected with the torsional load loading jig and is aligned with the driving device 4, the length of the steel wire rope 5 is adjusted to be tightened, a specified torsional moment is loaded on a vehicle body through the load loading mechanism,
3) and (3) installing a displacement sensor at a proper position according to the vehicle type, detecting deformation displacement, and calculating torsional rigidity according to detected data.
As shown in fig. 5, a vehicle body bending torsional rigidity test comprises the following steps:
1) four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point 10.1, a second front suspension mounting point 10.2, a first rear suspension mounting point 10.3 and a second rear suspension mounting point 10.4 of a vehicle body to support the vehicle body;
2) two groups of load loading mechanisms are respectively connected with bending load applying jigs 11 arranged on two sides of the middle part of a vehicle body, two driving devices 4 and two fixed pulleys 9 are arranged on a mounting platform 13, two steel wire ropes 5 penetrate through the two fixed pulleys 9 and are respectively connected with the front ends of the two driving devices 4, the positions of the two fixed pulleys 9 are adjusted, the parts of the two steel wire ropes 5, which are connected with the bending load applying jigs 11, are vertical and aligned with the driving devices 4, and a specified torsion moment is applied to the vehicle body through the load loading mechanisms;
3) and (3) installing a displacement sensor at a proper position according to the vehicle type, detecting deformation displacement, and calculating bending rigidity according to detected data.
As shown in fig. 6, a towing hook static tension test comprises the following steps:
1) four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point 10.1, a second front suspension mounting point 10.2, a first rear suspension mounting point 10.3 and a second rear suspension mounting point 10.4 of a vehicle body to support the vehicle body,
2) the loading mechanism is adopted to be connected with a car body traction hook 12, a driving device 4 is arranged on a supporting table 1 with a proper height, one end of a steel wire rope 5 is connected with the car body traction hook 12, the other end of the steel wire rope is connected with the front end of the driving device 4, the positions of the supporting table 1 and the driving device 4 are adjusted, the direction of the steel wire rope 5 and the force applying direction meet the test requirements, and the load loading mechanism loads the car body with specified pulling force;
3) and (4) installing a displacement sensor at a proper position according to the vehicle type to detect deformation displacement.
The foregoing is merely an embodiment of the present invention, and it should be noted that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the protective scope of the present invention, and the remaining portions that are not described in detail are prior arts.
Claims (5)
1. A car body rigidity test system is characterized in that: comprises a vehicle body supporting mechanism and a load loading mechanism;
the vehicle body supporting mechanism comprises a supporting table (1), a supporting rod assembly (2) and a suspension mounting piece (3), wherein the bottom end of the supporting rod assembly (2) is detachably mounted on the supporting table (1), the top end of the supporting rod assembly (2) is movably connected with the bottom end of the suspension mounting piece (3), and the top end of the suspension mounting piece (3) is connected with a suspension mounting point of a vehicle body;
the load loading mechanism comprises a driving device (4) and a steel wire rope (5), one end of the steel wire rope (5) is connected with the driving device (4), and the other end of the steel wire rope is connected with a set traction point on the vehicle body;
the supporting rod assembly (2) comprises a supporting cylinder (2.1) and a height adjusting rod (2.2), the bottom end of the supporting cylinder (2.1) is detachably connected with the supporting table (1), the lower part of the height adjusting rod (2.2) is screwed into the supporting cylinder (2.1) and is in threaded connection with the supporting cylinder, and the top end of the height adjusting rod (2.2) is movably connected with the suspension mounting piece (3);
a ball-and-socket universal joint (6) is arranged between the height adjusting rod (2.2) and the suspension mounting part (3), two ends of the ball-and-socket universal joint (6) are respectively in threaded connection with the height adjusting rod (2.2) and the suspension mounting part (3), and spring gaskets (7) are arranged at the joints of the two ends of the ball-and-socket universal joint (6);
the suspension mounting piece (3) comprises a mounting sleeve (3.1), a mounting disc (3.2), a mounting rod (3.3), a mounting ring (3.4) and a nut (3.5);
the upper end of the ball-and-socket universal joint (6) is screwed into the lower end of the mounting sleeve (3.1) and is in threaded connection with the lower end of the mounting sleeve, the upper end of the mounting sleeve (3.1) is fixedly connected with the lower end of the mounting disc (3.2), the middle part of the upper end of the mounting disc (3.2) is fixedly connected with the lower end of the mounting rod (3.3), and the mounting ring (3.4) and the nut (3.5) are sleeved on the mounting rod (3.3);
the lower end of the ball-and-socket universal joint (6) is provided with a connecting sleeve (6.1), and the upper end of the height adjusting rod (2.2) is screwed into the connecting sleeve (6.1) and is in threaded connection with the connecting sleeve; the height adjusting rod (2.2) is sleeved with a locking ring (8) used for locking the height adjusting rod on the supporting cylinder (2.1);
the supporting table (1) is a rectangular box-shaped structure with openings at two ends, which is formed by welding four steel plates (1.1), and each steel plate (1.1) is provided with a plurality of screw holes (1.2); a base (2.3) is arranged at the bottom end of the supporting cylinder (2.1), a plurality of through holes (2.4) are formed in the base (2.3), and the base (2.3) is installed on the supporting table (1) through bolts;
the suspension mounting point includes first preceding suspension mounting point (10.1), second preceding suspension mounting point (10.2), first rear suspension mounting point (10.3), second rear suspension mounting point (10.4), first preceding suspension mounting point (10.1), second preceding suspension mounting point (10.2) set up the front side at the automobile body, first rear suspension mounting point (10.3), second rear suspension mounting point (10.4) set up the rear side at the automobile body.
2. The vehicle body rigidity testing system according to claim 1, characterized in that: the load loading mechanism further comprises a fixed pulley (9), and the steel wire rope (5) is connected with the fixed pulley (9) in a winding mode.
3. A method for testing vehicle body rigidity by using the vehicle body rigidity testing system according to claim 1 or 2, characterized in that: the method comprises a vehicle body torsional rigidity test, wherein the vehicle body torsional rigidity test comprises the following steps: three groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point (10.1), a first rear suspension mounting point (10.3) and a second rear suspension mounting point (10.4) of a vehicle body to support the vehicle body, a load loading mechanism is connected with a second front suspension mounting point (10.2), a specified torsional moment is loaded on the vehicle body through the load loading mechanism, deformation displacement is detected, and torsional rigidity is calculated according to detected data.
4. The vehicle body rigidity test method according to claim 3, characterized in that: the method also comprises a vehicle body bending torsional rigidity test, which comprises the following steps: the four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point (10.1), a second front suspension mounting point (10.2), a first rear suspension mounting point (10.3) and a second rear suspension mounting point (10.4) of a vehicle body to support the vehicle body, two groups of load loading mechanisms are respectively connected with bending load applying jigs (11) arranged on two sides of the middle part of the vehicle body, a specified torsion moment is loaded on the vehicle body through the load loading mechanisms, deformation displacement is detected, and bending rigidity is calculated according to detected data.
5. The vehicle body rigidity test method according to claim 4, characterized in that: the method also comprises a traction hook static tension test, wherein the traction hook static tension test comprises the following steps: the four groups of vehicle body supporting mechanisms are respectively connected with a first front suspension mounting point (10.1), a second front suspension mounting point (10.2), a first rear suspension mounting point (10.3) and a second rear suspension mounting point (10.4) of a vehicle body to support the vehicle body, a load loading mechanism is connected with a vehicle body towing hook (12), and a specified pulling force is loaded on the vehicle body through the load loading mechanism to detect deformation displacement.
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| CN201910375439.5A CN111999017B (en) | 2019-05-07 | 2019-05-07 | Vehicle body rigidity test system and method |
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| CN201910375439.5A CN111999017B (en) | 2019-05-07 | 2019-05-07 | Vehicle body rigidity test system and method |
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| CN111999017B true CN111999017B (en) | 2022-03-29 |
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| CN112621684B (en) * | 2020-12-29 | 2023-12-01 | 上海渤元信息科技有限公司 | Bench experiment device with adjustable automobile rigidity and rigidity adjusting method thereof |
| CN112903219A (en) * | 2021-01-20 | 2021-06-04 | 东风商用车有限公司 | Body-in-white rigidity test fixture |
| CN113340737A (en) * | 2021-05-06 | 2021-09-03 | 上海卫星工程研究所 | Rigidity test equipment suitable for different structural members and test method thereof |
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