Side column collision acceleration sliding table test device

Abstract

The utility model provides a side column collision acceleration sliding table test device which comprises a base used for being fixedly connected with an acceleration trolley system, a sliding platform is arranged on the base, one end of the sliding platform is provided with a column device, the column device comprises a fixed seat connected to the base, the rear side of the fixed seat is connected with a connecting frame, and the connecting frame is connected with a sliding platform. The rear end of the connecting frame is connected with a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate extend in the vertical direction and are oppositely arranged side by side in the left-right direction, and displacement sensors are connected in the testing space between the first mounting plate and the fixing base and the testing space between the second mounting plate and the fixing base; the rear side wall of the fixing base is further connected with reinforcing steel bars used for abutting against the front side plate faces of the first mounting plate and the second mounting plate. The simulation precision of the vehicle door intrusion process can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile simulation collision test, in particular to a side column collision acceleration slide test device. Background Art

[0002] With the rapid growth of the new energy vehicle market, the safety of new energy vehicles has also received more and more attention. In order to effectively prevent the battery from being squeezed and causing fire during a car collision, major OEMs have enhanced the strength of the vehicle structure to varying degrees. Among them, it is particularly obvious to deal with the side column collision condition.

[0003] The increased strength of the side structure of the vehicle body causes the occupants to bear greater collision energy, so a better restraint system (seats, side airbags, seat belts, etc.) must be matched to effectively protect the occupants. Since it is extremely costly to optimize the restraint system through the actual vehicle side column collision test, the side column collision simulation test that can reproduce the whole vehicle test process has the advantages of low cost, good repeatability, and short time. Therefore, the side column collision simulation test plays an important role in the whole vehicle development process.

[0004] At present, the side column impact simulation test methods adopted by major domestic testing institutions and OEMs are similar. They mainly use a column simulation device to hit the car door with a certain acceleration, causing the car door to deform, thereby simulating the deformation process of the car door in the whole vehicle test.

[0005] For example, a trolley side column impact simulation experimental device is disclosed in the Chinese invention patent document with application publication number CN115266139A, which includes a side column tooling, a door interior tooling, a seat installation tooling and a secondary slide. This scheme can simulate the door intrusion amount and intrusion angle in the whole vehicle side column test to a certain extent, that is, simulate the relative position change between the door and the seat, but the movement posture of the seat is not considered in the device, and the door deformation can only be adjusted by the input test waveform. In order to meet the battery collision requirements, the side body structure of new energy vehicles is complex, among which the door sill beam is particularly obvious. Its supporting strength for the door and the side column is relatively large, which will affect the test effect of the side column impact, resulting in some test waveforms with higher frequencies and narrower pulse widths between peaks and troughs, and the trolley cannot be accurately simulated, thereby affecting the simulation accuracy of the door intrusion amount and intrusion angle. Utility Model Content

[0006] The utility model provides a side column impact acceleration slide test device to solve the problem that the test device in the prior art cannot obtain accurate simulation accuracy for the complex side structure of new energy vehicles.

[0007] The side column impact acceleration slide test device involved in the utility model comprises a base for being fixedly connected to the acceleration trolley system, the base is provided with a sliding platform, one end of the sliding platform has a column device, the column device comprises a fixed seat connected to the base, the rear side of the fixed seat is connected with a connecting frame, the rear end of the connecting frame is connected with a first mounting plate and a second mounting plate, the first mounting plate and the second mounting plate extend vertically and are arranged side by side opposite to each other left and right, and the adjacent edges of the two are hingedly assembled along the same vertical extension axis, the first mounting plate and the second mounting plate have sheet metal mounting structures for installing door sheet metal and B-pillar sheet metal, displacement sensors are connected in the test space between the first mounting plate and the fixed seat, and between the second mounting plate and the fixed seat, and the rear side wall of the fixed seat is also connected with steel bars for resisting against the front side plate surfaces of the first mounting plate and the second mounting plate.

[0008] Furthermore, a connecting shaft extending up and down is fixed to the rear end of the connecting frame, and the first mounting plate and the second mounting plate are both rotatably sleeved on the connecting shaft.

[0009] Furthermore, the connecting shaft is also sleeved with a side column, the side column is located behind the first mounting plate and the second mounting plate, and the upper and lower positions of the side column on the connecting shaft are adjustable.

[0010] Furthermore, there are multiple steel bars, and the multiple steel bars are arranged up and down in the test space.

[0011] Furthermore, a plurality of steel grooves extending in the front-to-rear direction are provided on the rear side wall of the fixing seat, the steel grooves are spaced apart in the up-down direction, and each steel bar is inserted into each steel groove respectively.

[0012] Furthermore, a seat adjustment device is provided between the sliding platform and the base, and the seat adjustment device includes a driver arranged at the front end of the base and a buffer block arranged at the rear end of the base. The driver contacts the sliding platform to drive the sliding platform to move backward, and the buffer block is blocked in the rear end moving path of the sliding platform.

[0013] Furthermore, the displacement sensor is a wire-drawing displacement sensor.

[0014] Furthermore, the side column impact acceleration slide test device also includes a support frame, the fixed seat includes a triangular frame structure composed of vertical poles, horizontal poles and diagonal poles, the horizontal poles are fixedly connected to the base, the support frame is fixed on the vertical poles, the support frame is a flat frame structure, the connecting frame is connected to the center position of the support frame, the displacement sensor is connected near the left and right edges of the support frame, and the steel bars are arranged on the left and right sides of the connecting frame.

[0015] Furthermore, the connecting frame is an isosceles triangle frame structure that is wide at the front and narrow at the back.

[0016] Furthermore, the sliding platform is evenly distributed with a plurality of mounting holes, and the sliding platform is also provided with a seat mounting structure, and the seat mounting structure includes a seat mounting frame fixed on the plurality of mounting holes.

[0017] Beneficial effects: In the utility model, the door sheet metal and the B-pillar sheet metal are fixed on the column device, and steel bars and wire-drawing displacement sensors are creatively introduced. The acceleration curve is input by the acceleration trolley system to simulate the collision experiment. The implementation method is opposite to the method of the whole vehicle side column collision test, which better simulates the door intrusion and deformation. By adjusting the number and type of steel bars, and cooperating with the input acceleration curve, the "V-shaped" intrusion of the door, which is deep in the middle and shallow on both sides, can be effectively simulated to improve the simulation accuracy, and the factors affecting the deformation of the door are adjusted from the single factor of the acceleration curve to the double factor, which can effectively avoid the problem that the acceleration trolley system is difficult to simulate complex curves, thereby affecting the accuracy of the test simulation. The double-factor adjustment, that is, by adjusting the number and type of steel bars, can achieve the posture and force simulation of the door device when it is impacted during the instantaneous movement of the trolley, and at the same time, in conjunction with the input acceleration curve, it can effectively improve the simulation accuracy of the door intrusion process. The scheme has reliable principles and good repeatability, simple mechanical device structure, convenient operation, low cost, and a wide range of applications, which can greatly assist in reducing the development cost and cycle of the side restraint system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the side column impact acceleration slide test device in this embodiment;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure of the center column device;

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle door device;

[0021] Figure 4 for Figure 1 Schematic diagram of the structure of the middle base.

[0022] The reference numerals in the drawings of the specification are as follows:

[0023] 1-column device; 11-fixed seat; 12-support frame; 13-steel trough; 14-displacement sensor; 15-connecting frame; 16-connecting shaft; 17-first mounting plate; 18-side column; 19-second mounting plate;

[0024] 2-door assembly; 21-B-pillar sheet metal; 22-door sheet metal;

[0025] 3-seat mounting structure, 31-seat mounting frame; 32-seat;

[0026] 4-base; 41-base; 42-driver; 43-slide rail; 44-slide platform; 45-buffer block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In order to illustrate the technical solution of the present utility model, specific embodiments are provided below for illustration.

[0029] The utility model relates to a side column collision acceleration slide test device, such as Figures 1 to 4 As shown, the device includes a base 4, a column device 1, a door device 2 and other structures, wherein the base 4 includes a base 41 and a sliding platform 44 that is guided and slidably assembled on the base 41, the base 41 is connected and fixed to the acceleration trolley by bolts, and a plurality of slide rails 43 are arranged on the base 41, the slide rails 43 extend in the front-to-back direction and are evenly spaced in the left-to-right direction, and the sliding platform 44 can slide freely forward and backward on the slide rails 43.

[0030] In addition, in order to adjust the test seat, a seat adjustment device is provided between the sliding platform 44 and the base 4. Specifically, the seat adjustment device includes a driver 42 and a buffer block 45 which are arranged on the base 41 and located near the front and rear ends of the sliding platform 44. The driver 42 can achieve multi-speed adjustable damping and is used to drive the sliding platform 44 to move during the test, thereby adjusting the movement posture of the seat 32. The front end of the buffer block 45 is made of polyurethane material, which can effectively buffer the sliding platform 44 during the test.

[0031] The sliding platform 44 is a flat plate structure, and a plurality of evenly distributed mounting holes are opened on its upper plate surface, and a seat mounting structure 3 is mounted on the mounting holes. In this embodiment, the seat mounting structure 3 includes a seat mounting frame 31 fixed on the plurality of mounting holes, and the seat mounting frame 31 is a rectangular frame structure as a whole.

[0032] The above-mentioned column device 1 includes a fixed seat 11 connected to the base 41, and a connecting frame 15 is welded to the rear side of the fixed seat 11, and the rear end of the connecting frame 15 is connected to the first mounting plate 17 and the second mounting plate 19, wherein the first mounting plate 17 and the second mounting plate 19 extend vertically and are arranged side by side opposite to each other left and right, and the adjacent edges of the two are hingedly assembled along the same vertical extension axis so that the first mounting plate 17 and the second mounting plate 19 can rotate relative to each other around the hinge axis.

[0033] Specifically in this embodiment, the column device 1 also includes a support frame 12, the fixed seat 11 includes a triangular frame structure composed of a vertical rod, a horizontal rod and an oblique rod, the horizontal rod is fixedly connected to the base 41, the support frame 12 is fixed on the vertical rod, the support frame 12 is a flat frame structure, and the connecting frame 15 is connected to the center of the support frame 12. In order to ensure the stability of the structure, the connecting frame 15 is an isosceles triangle frame structure that is wide in the front and narrow in the back, which can provide stable support for the rear end structure.

[0034] In order to simplify the structure and achieve stable support for the first mounting plate 17 and the second mounting plate 19, a connecting shaft 16 extending up and down is welded and fixed to the rear end of the connecting frame 15, and the first mounting plate 17 and the second mounting plate 19 are both rotatably mounted on the connecting shaft 16 through a sleeve ring.

[0035] In addition, a side column 18 is sleeved on the connecting shaft 16, and the side column 18 is located behind the first mounting plate 17 and the second mounting plate 19. The side column 18 is adjustable in position up and down on the connecting shaft 16. Specifically, the main function of the side column 18 is to simulate the real rigidity requirement of the separation position after the door sheet metal and the B-pillar sheet metal are separated, so as to avoid the loss of rigidity caused by cutting and improve the simulation authenticity.

[0036] The first mounting plate 17 and the second mounting plate 19 have structures for sheet metal installation with the door device 2. In this embodiment, the door device 2 includes a door sheet metal 22 and a B-pillar sheet metal 21. Specifically, the door sheet metal 22 is cut according to experimental requirements, and the cut portion is welded and fixed to the first mounting plate 17 and the second mounting plate 19 together with the B-pillar sheet metal 21.

[0037] Displacement sensors 14 are connected in the test space between the first mounting plate 17 and the fixed seat 11, and between the second mounting plate 19 and the fixed seat 11. The displacement sensor 14 in this embodiment is a wire-type displacement sensor. There are multiple displacement sensors 14 distributed near the left and right edges of the support frame 12 along the left and right directions, and are respectively connected to the first mounting plate 17 and the second mounting plate 19, so as to timely collect displacement signals when the first mounting plate 17 and the second mounting plate 19 are angularly deflected.

[0038] The rear side wall of the fixing seat 11 is also connected with steel bars for supporting the front side surfaces of the first mounting plate 17 and the second mounting plate 19 . There are multiple steel bars arranged up and down in the test space. The steel bars are arranged on the left and right sides of the connecting frame 15 .

[0039] In order to realize the fixed installation of the steel bars, a plurality of steel grooves 13 extending in the front-to-back direction are provided on the rear side wall of the support frame 12. The steel grooves 13 are spaced apart in the up-down direction, and each steel bar is inserted into each steel groove 13. The front end of the steel bar is fixed, the rear end is suspended, and extends toward the first mounting plate and the second mounting plate. When the trolley moves instantaneously, the first mounting plate and the second mounting plate move in the opposite direction due to inertia, and the impact of different positions of the vehicle when hit by the side column is simulated by the different extension lengths of the steel bars, thereby realizing the posture simulation of the real inertial action of the door device 2.

[0040] The working process of the test device of this embodiment is as follows: first, the seat 32 is installed on the sliding platform 44, then the door sheet metal 22 and the B-pillar sheet metal 21 are fixed on the support frame 12 and the position of the side pillar 18 is adjusted according to the test requirements, and then the door trim, B-pillar trim, seat belt, etc. are installed on the door device 2 according to the whole vehicle test state. Then, according to the test requirements, a certain number and type of steel bars are selected and installed in the steel groove 13 and the displacement sensor 14 is adjusted so that the support frame 12 is parallel to the first mounting plate 17 and the second mounting plate 19. Then, the sliding platform 44 is moved so that the relative position relationship between the seat 32 and the door device 2 is consistent with the whole vehicle test, and the position and damping gear of the driver 42 are adjusted so that the front end of the driver 42 contacts the sliding platform 44. Finally, the position of the dummy is adjusted and the acceleration curve of the acceleration trolley system is input to start the test. After the test, the data of the displacement sensor 14 can be converted into the door deformation and compared with the simulation data to assist in analyzing the door deformation process, thereby improving the simulation accuracy of the door intrusion.

[0041] In the actual working process, the acceleration trolley system moves instantaneously, driving the base to move synchronously and instantaneously. Due to the hinged assembly of the first mounting plate and the second mounting plate, the first mounting plate and the second mounting plate swing forward due to inertia and generate impact force due to the resistance of the steel bars. At the same time, the seat follows the instantaneous movement of the sliding platform and moves on the guide rail due to inertia, simulating the real posture of the vehicle side column collision in reverse.

[0042] The above-mentioned multi-speed adjustable driver is used to simulate the seat movement posture in the whole vehicle test, which reduces the difference between the side column impact simulation test and the whole vehicle test and improves the simulation accuracy.

[0043] The device is suitable for different vehicle models. When switching vehicle models, only the acceleration waveform, seat base and door device need to be replaced, so it has high versatility.

[0044] The method has reliable principle, good repeatability, simple mechanical device structure, easy operation and low cost. It can accurately simulate the deformation process of the door in the vehicle side column impact test and reproduce the dummy's injury value.

[0045] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the utility model, and should be included in the protection scope of the utility model.

Claims

1. A side column impact acceleration slide test device, characterized in that: The invention comprises a base for being fixedly connected to an acceleration trolley system, a sliding platform is arranged on the base, one end of the sliding platform has a column device, the column device comprises a fixed seat connected to the base, a connecting frame is connected to the rear side of the fixed seat, a first mounting plate and a second mounting plate are connected to the rear end of the connecting frame, the first mounting plate and the second mounting plate extend vertically and are arranged side by side opposite to each other left and right, and the adjacent edges of the two are hingedly assembled along the same vertical extension axis, the first mounting plate and the second mounting plate have sheet metal mounting structures for mounting door sheet metal and B-pillar sheet metal, displacement sensors are connected in the test space between the first mounting plate and the fixed seat, and in the test space between the second mounting plate and the fixed seat, and a steel bar for resisting against the front side plate surface of the first mounting plate and the second mounting plate is also connected to the rear side wall of the fixed seat.

2. The side column impact acceleration slide test device according to claim 1, characterized in that: A connecting shaft extending up and down is fixed to the rear end of the connecting frame, and the first mounting plate and the second mounting plate are both rotatably sleeved on the connecting shaft.

3. The side column impact acceleration slide test device according to claim 2, characterized in that: The connecting shaft is also sleeved with a side column, which is located behind the first mounting plate and the second mounting plate, and the upper and lower positions of the side column on the connecting shaft are adjustable.

4. The side column impact acceleration slide test device according to claim 1, characterized in that: There are a plurality of the steel bars, and the plurality of the steel bars are arranged up and down in the test space.

5. The side column impact acceleration slide test device according to claim 4, characterized in that: A plurality of steel grooves extending in the front-to-back direction are arranged on the rear side wall of the fixing seat. The steel grooves are spaced apart in the up-down direction, and each steel bar is respectively inserted and fixed in each steel groove.

6. The side column impact acceleration slide test device according to claim 1, characterized in that: A seat adjustment device is also provided between the sliding platform and the base, and the seat adjustment device includes a driver arranged at the front end of the base and a buffer block arranged at the rear end of the base. The driver contacts the sliding platform to drive the sliding platform to move backward, and the buffer block is blocked in the rear end moving path of the sliding platform.

7. The side column impact acceleration slide test device according to any one of claims 1 to 6, characterized in that: The displacement sensor is a wire-drawing type displacement sensor.

8. The side column impact acceleration slide test device according to any one of claims 1 to 6, characterized in that: The column device also includes a supporting frame, the fixed seat includes a triangular frame structure composed of vertical poles, horizontal poles and diagonal poles, the horizontal poles are fixedly connected to the base, the supporting frame is fixed on the vertical poles, the supporting frame is a flat frame structure, the connecting frame is connected to the center position of the supporting frame, the displacement sensor is connected to the left and right sides of the supporting frame near the edges, and the steel bars are arranged on the left and right sides of the connecting frame.

9. The side column impact acceleration slide test device according to any one of claims 1 to 6, characterized in that: The connecting frame is an isosceles triangle frame structure that is wide at the front and narrow at the back.

10. The side column impact acceleration slide test device according to any one of claims 1 to 6, characterized in that: The sliding platform is evenly distributed with a plurality of mounting holes. The sliding platform is also provided with a seat mounting structure. The seat mounting structure includes a seat mounting frame fixed on the plurality of mounting holes.

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