CN205538230U - Automobile operation stability rack test test bench - Google Patents

Abstract

A vehicle handling stability bench test bench, the test bench includes a power unit, a support plate, and a force-measuring module, the support plate is formed with a surface close to the characteristics of the road surface, and the car under test is parked on the support plate Above, the support plate is fixedly connected to the force-measuring module, and the power device drives the support plate and the force-measuring module to realize the specific regular movement of the vehicle handling stability test. The utility model provides an automobile handling stability test bench which improves the accuracy and consistency of test results.

Description

Automobile Handling Stability Bench Test Bench

technical field

The utility model relates to the field of automobile testing, in particular to an automobile handling stability test bench.

Background technique

The research and development of a complete vehicle is inseparable from the vehicle handling stability test. In recent years, the automotive technology community has paid more and more attention to improving the handling stability of vehicles. Although a series of international standards have been formed on how to test and evaluate the handling stability of vehicles, it is affected by the calculation level of vehicle dynamics and the level of testing technology in the era when the standards were formulated. Due to the constraints of the situation, there are problems such as the calculation results and test accuracy are not high enough, and the calculation and test results are quite different. Among them, the test accuracy and repeat consistency are the main aspects of the contradiction, which should be resolved first. Bench test has the advantages of easy and accurate control of test conditions and good repeatability of test results. Therefore, it is widely used in automobile research and development and performance comparison between similar vehicles. For example, NCAP test is the most representative bench test. However, there are few researches and results on bench test technology related to vehicle handling stability.

The most concerned about the vehicle handling stability is the dynamic data of the contact force between the tire and the ground (including the normal, tangential and lateral reaction forces of the ground to the tire), the eigenvalues and responses of the body's roll, lateral and yaw vibrations data, and the interrelationships between those data. The actual vehicle driving test conducted in accordance with relevant ISO standards and relevant domestic standards is generally not easy because the test conditions are not easy to control accurately, especially the test vehicle driver's operating level, psychological quality, immediate emotion and fatigue and other factors have a great impact on the test results. Obtain more accurate handling stability test results. More importantly, there is no mature technical solution to accurately measure the dynamic force between the tire and the ground through the actual vehicle driving test.

Contents of the invention

In order to overcome the shortcomings of the low test result accuracy caused by the existing vehicle handling stability test method, the utility model provides a vehicle handling stability bench test method and a test bench which can improve the accuracy and consistency of the test results.

The technical scheme that the utility model solves its technical problem adopts is:

A vehicle handling stability bench test bench, the test bench includes a power unit, a support plate, a force-measuring module, the support plate is shaped on a surface close to the characteristics of the road surface, and the car under test is parked on the support plate, The support plate is fixedly connected to the force-measuring module, and the power device drives the support plate and the force-measuring module to realize the specific regular movement of the vehicle handling stability test.

The specific regular motions of the vehicle handling stability test of the utility model refer to roll, lateral and yaw motions.

The test bench includes N sets of support plates and force-measuring modules, respectively supporting N sets of wheels of the vehicle under test, where N≥2 and is a natural number.

The force measuring module is a multi-dimensional force sensor.

A protective edge is provided around the support surface of the support plate.

The force measuring module is installed on the support platform of the test bench, and the support platform is connected with the round platform through rollers, guide rails or bearings, and is driven to rotate relative to the round platform by a rotating power device. The sliding table is fixedly connected.

Or: the force measuring module is installed on the slide table of the test bench.

The slide table is connected to the base through rollers, guide rails or bearings, and is driven by a linear power device to move linearly relative to the base.

Or again: the force-measuring module is installed on the turntable of the test bench, the turntable is connected with a circular motion power device, and the turntable can perform circular motion around the axis line under the drive of the circular motion power device.

The turntable is provided with wheels.

The technical concept of the utility model is: park the car under test on a support plate capable of exerting lateral motion, yaw and circular motion on the car, the car under test is in the state of parking brake, and the support plate and The surface contacted by the tires of the car under test is manufactured according to specific road surface characteristics, the support plate is consolidated with the force-measuring module, the force-measuring module is consolidated with the motion platform, and the motion platform is driven by the power device and can be used as Specific and regular linear motion, lateral motion and circular motion, and the speed of motion is variable and controllable.

According to the relationship between the action and reaction force between the tire and the ground, the motion platform can accurately simulate the lateral and yaw motion of the car under common working conditions, and apply the motion to the car through the contact between the support plate and the tire. Measure and record the load on the tire and the support plate in real time, and install displacement, angle, acceleration and other sensors on the characteristic parts of the car according to the needs of the test subjects, and simultaneously measure and record the responses of vibrations such as roll, lateral and yaw data.

The beneficial effects of the utility model are mainly manifested in that: the test method and the test bench can apply accurate and repeatable lateral motion, yaw motion and circular motion to the car under test, and the tire acts on the support with ground characteristics. The load on the board can be accurately collected and recorded by the force sensor, so more accurate test results can be obtained than the actual driving test.

Description of drawings

Fig. 1 is a schematic structural view of an embodiment of a vehicle handling stability test bench capable of lateral and yaw motions.

Fig. 2 is a schematic structural view of an embodiment of a vehicle handling stability test bench capable of lateral movement.

Fig. 3 is a schematic structural view of an embodiment of a vehicle handling stability test bench capable of circular motion.

Fig. 4 is a structural schematic diagram of an embodiment of a support plate.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described.

With reference to Fig. 1～Fig. 4, a kind of automobile handling stability bench test test bench, described test bench comprises power unit, support plate 15, force measuring module 14, and described support plate 15 is shaped on the surface 25 close to road surface characteristic, The car under test is parked on the support plate, the support plate 15 is fixedly connected to the force-measuring module 14, and the power unit drives the support plate 15 and the force-measuring module 14 to realize the specific rules of the vehicle handling stability test. sports.

The specific regular motions of the vehicle handling stability test in this embodiment refer to roll, lateral and yaw motions.

Further, the test bench includes N sets of support plates and force-measuring modules, respectively supporting N sets of wheels of the vehicle under test, where N≥2 and is a natural number. The test bench is provided with N sets of support plates 15 and force-measuring modules 14, which are used to respectively support N sets of wheels of the car under test, and measure the dynamic forces acting on the corresponding support plates 15 by the wheels respectively. .

Still further, the force measuring module 14 is a multi-dimensional force sensor.

Furthermore, a protective edge 25 is provided around the support surface of the support plate 5 . The surface 26 may be a layer of asphalt material.

The protective edge 25 is used to prevent the wheel from sliding relative to the ground and cause the car under test to fall off the test stand.

The force-measuring module 14 is installed on the support platform 13 of the test bench, and the support platform 13 is connected with the round platform 9 through rollers, guide rails or bearings, and is driven by a rotating power device 20 to rotate relative to the round platform 9 Movement, the round table 9 is fixedly connected with the slide table 6.

The bottom of the support platform 13 is provided with the upper roller 12 and the lower roller 10, the round table 9 is provided with the guide rail 11, the guide rail 11 is a circular guide rail, and the upper roller 12 can support the support platform 13 rotates on the guide rail 11, and the lower roller 10 is used to prevent the supporting platform 13 from tipping over.

The supporting platform 13 is provided with a driven gear 18, and the rotating power device 20 drives the driven gear 18 to rotate through the driving gear 19, and then drives the circular table 9 to rotate. The rotating power device 20 and the sliding table 6 Fixed connection.

Alternatively: the force-measuring module 14 is installed on the sliding table 6 of the test bench.

The slide table 6 is connected to the base 1 through rollers, guide rails or bearings, and is driven by a linear power device to move linearly relative to the base 1 .

Described slide table 6 is provided with upper roller 8 and lower roller 7, and described base 1 is provided with described guide rail 5, and described upper roller 8 can support described slide table 6 to make linear motion on described guide rail 5, so The following rollers 7 are used to prevent the slide table 6 from tipping over.

The slide table 6 is provided with the power device 4 and the transmission gear 3 , and the power device 4 drives the slide table 6 to move linearly through the meshing relationship between the transmission gear 3 and the rack 2 .

Or again: the force measuring module 14 is installed on the turntable 22 of the test bench, the turntable 22 is connected with the circular motion power device 21, and the said turntable 22 can be driven around the axis by the circular motion power device 21 The line moves in a circular motion. The turntable 22 is provided with wheels 23 .

The protective device 16 is arranged on both sides of the tested vehicle 17 to reduce the damage to the tested vehicle and the test bench caused by the rollover of the tested vehicle during the test.

The test method that the automobile handling stability bench test bench of the present embodiment realizes, the car under test 17 is parked on the support plate 15, and the car under test 17 is in the parking brake state, and the support plate 15 and the The surface contacted by the tires of the vehicle under test is manufactured according to specific road surface characteristics;

According to the relationship between the action and the reaction force that exists between the tire and the ground, the motion platform simulates the specific regular motion of the vehicle handling stability test, and the motion is applied to the vehicle under test through the contact between the support plate 15 and the tire, Simultaneously measure and record the load that the tire acts on the support plate in real time, and at the same time, according to the needs of the test subjects, sensors can be added to specific parts of the tested car to simultaneously measure and record the response data of the movement.

Claims (9)

1. a vehicle handling stability engine bench test testing stand, it is characterized in that: described testing stand includes power set, gripper shoe, force-measuring module, described gripper shoe is shaped with the surface close to pavement characteristics, tested automobile parking is in described gripper shoe, described gripper shoe is fixedly connected on described force-measuring module, and described power set drive described gripper shoe and force-measuring module to realize lateral movement, weaving or circular motion.

2. testing stand as claimed in claim 1, it is characterised in that: described testing stand includes N group gripper shoe and force-measuring module, supports the N group wheel of described tested automobile respectively, N >=2 and be natural number.

3. testing stand as claimed in claim 1 or 2, it is characterised in that: described force-measuring module is multi-dimension force sensor.

4. testing stand as claimed in claim 1 or 2, it is characterised in that: the supporting surface of described gripper shoe is provided around protection edge.

5. testing stand as claimed in claim 1 or 2, it is characterized in that: described force-measuring module is arranged on the supporting station of described testing stand, described supporting station is connected with round platform by roller, guide rail or bearing, and driving work to rotate relative to described round platform by rotary power unit, described round platform is fixing with slide unit to be connected.

6. testing stand as claimed in claim 1 or 2, it is characterised in that: described force-measuring module is arranged on the slide unit of described testing stand.

7. testing stand as claimed in claim 5, it is characterised in that: described slide unit is connected with base by roller, guide rail or bearing, and drives the work linear motion relative to described base by straight-line power device.

8. testing stand as claimed in claim 6, it is characterised in that: described slide unit is connected with base by roller, guide rail or bearing, and drives the work linear motion relative to described base by straight-line power device.

9. testing stand as claimed in claim 1 or 2, it is characterized in that: described force-measuring module is arranged on the turntable of described testing stand, described turntable is connected with circular motion power set, and described turntable can circle around axial line under circular motion power set drive.