A special site for misuse test of automobile chassis

Abstract

The application provides a special field for chassis misuse test of an automobile, which comprises a deep pit type characteristic road, a convex type characteristic road and a high ridge type characteristic road arranged side by side, and a first connecting lane and a second connecting lane, the front ends of the deep pit type characteristic road, the convex type characteristic road, the first connecting lane and the second connecting lane are communicated with a first start and end area, the rear ends are communicated with a second start and end area, a curved connecting section is arranged on the second connecting lane, the high ridge type characteristic road is connected in parallel on the curved connecting section, and the first connecting lane and the second connecting lane are respectively arranged on the left and right sides of the three types of characteristic roads, so that the first connecting lane, the first start and end area, the second connecting lane and the second start and end area are spliced to form a circulating lane surrounding the three types of characteristic roads. The chassis misuse working condition can be efficiently and centrally developed and verified, so that the chassis misuse verification period of the automobile product is shortened and the test cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of automobile testing technology, and in particular to a dedicated testing site for automobile chassis misuse testing. Background Technology

[0002] Automotive safety, energy efficiency, and environmental protection have become three major research hotspots with significant social and economic implications in the field of automotive engineering. Safety, in particular, is given paramount importance by automakers, parts suppliers, and third-party testing organizations, as it provides crucial protection for people's lives and property. During vehicle development, vehicles must undergo tests such as crash safety assessments. Furthermore, the safety performance under chassis misuse conditions must be considered. Users encounter potholes, bumps, or protrusions on the road (hereinafter referred to as chassis misuse conditions). To ensure user safety and awareness, the design, development, and verification process for automotive products considers the vehicle's performance under these chassis misuse conditions.

[0003] Automotive OEMs have shown varying degrees of interest in research related to chassis misuse scenarios, and this interest is steadily increasing. From the misuse of electronic components to airbags and chassis misuse, research has been conducted in various fields and applied to the attributes of automotive products themselves. With the accumulation and development of user research technology, the typical characteristics of chassis misuse scenarios are increasingly reflecting the state of chassis misuse during user operation, and the number of typical characteristics is also increasing. Traditional automotive proving grounds typically only set up a few chassis misuse scenarios, making it difficult to conduct comprehensive and systematic verification of chassis misuse scenarios during vehicle product development and chassis misuse verification. Furthermore, the chassis misuse scenarios set up in traditional proving grounds involve long connecting road sections and require repeated execution of scenarios, resulting in low traffic efficiency. Therefore, it is necessary to design and lay out dedicated tracks for concentrated chassis misuse scenario features.

[0004] A literature search of existing related technologies revealed that CN107724195A discloses an airbag abuse test site and its layout method; CN216207581U discloses an impact test road surface device; CN211318693U discloses a battery pack abuse test device and laboratory; CN113848492A discloses a method for testing the aging and electrical abuse of drone batteries; CN212432396U discloses a general test device for testing the abuse force and tensile force of a car refueling door. CN112326265A discloses a design for a car performance test site. The search revealed that current designs for misuse devices and laboratories address misuse conditions such as those for battery packs, batteries, and components. There are also dedicated test site layouts for airbag abuse and car performance testing. Since the chassis is a crucial system and component for ensuring the safety of the entire vehicle, without a centralized and systematic chassis misuse test site, it is difficult to ensure efficient and systematic development and verification work for chassis misuse conditions. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention aims to provide a dedicated site for chassis misuse testing. The site layout design integrates the road surface features of chassis misuse conditions, such as deep pits, bumps, and high embankments, providing a compact layout of roads and road surface features. This allows for efficient and centralized development and verification of chassis misuse conditions, thereby shortening the chassis misuse verification cycle of complete vehicle products and reducing testing costs.

[0006] To achieve the above objectives, this invention proposes a dedicated testing ground for vehicle chassis misuse, comprising three types of characteristic roads arranged side-by-side: deep-pit type, raised-bump type, and high-ridge type, as well as a first connecting lane and a second connecting lane. The deep-pit type road, the raised-bump type road, and the high-ridge type road are all equipped with deep-pit chassis misuse features. The front ends of the deep-pit type road, the raised-bump type road, the first connecting lane, and the second connecting lane are all connected to a first start-end area, and the rear ends are all connected to a second start-end area. A curved connecting section is provided on the second connecting lane. The high-ridge type road is connected in parallel to the curved connecting section. The first connecting lane and the second connecting lane are located on the left and right sides of the three types of characteristic roads, respectively, so that the first connecting lane, the first start-end area, the second connecting lane, and the second start-end area are joined to form a circular lane enclosing the three types of characteristic roads. An entrance and exit are provided on the circular lane.

[0007] In the above scheme: the deep-pit-type characteristic road includes three straight lanes, namely the first straight lane, the second straight lane, and the third straight lane. Each straight lane has a square pit, and the three square pits contain three different deep-pit-type chassis misuse features. The deep-pit-type chassis misuse feature of the first straight lane is located 100m from the first start-end area, the deep-pit-type chassis misuse feature of the second straight lane is located 30m from the second start-end area, and the deep-pit-type chassis misuse feature of the third straight lane is located 50m from the first start-end area. The three straight lanes are used to deploy three different deep-pit-type chassis misuse features, allowing for the deployment of three typical deep-pit-type chassis misuse features.

[0008] In the above scheme: the chassis misuse feature of the first straight lane with a deep pit includes a flat bottom surface; the chassis misuse feature of the second straight lane with a deep pit includes another deep pit on the bottom surface; and the chassis misuse feature of the third straight lane with a deep pit includes a curved bottom surface. These three distinct chassis misuse features are used to conduct three different misuse test conditions.

[0009] In the above scheme: the raised-type feature road includes three straight lanes, namely the fourth, fifth, and sixth straight lanes. Three different raised-type chassis misuse features are arranged on these three straight lanes. The raised-type chassis misuse feature of the fourth straight lane is located 60m from the second start-end area, the raised-type chassis misuse feature of the fifth straight lane is located 50m from the first start-end area, and the raised-type chassis misuse feature of the sixth straight lane is located 70m from the first start-end area. The three straight lanes are used to arrange three different raised-type chassis misuse features, allowing for the arrangement of three typical raised-type chassis misuse features.

[0010] In the above scheme: the convex chassis misuse feature of the fourth straight lane includes a convex shape resembling a single step; the convex chassis misuse feature of the fifth straight lane includes a convex shape resembling a two-step; and the convex chassis misuse feature of the sixth straight lane includes a convex shape resembling an arch. These three distinct convex chassis misuse features are used to conduct tests under three different misuse conditions.

[0011] In the above scheme, the special site for the vehicle chassis misuse test also includes a seventh straight lane, which is adjacent to and parallel to the sixth straight lane. The seventh straight lane is a reserved extension feature lane, which is not equipped with chassis misuse features in the future, so as to facilitate the addition of other chassis misuse features in the future.

[0012] In the above scheme: the overall slope of the special site for the misuse test of automobile chassis is 0.1%, and a drainage ditch is set at the lowest point of the slope to facilitate drainage of the special site ground.

[0013] In the above scheme: the high embankment type characteristic road includes four cement blocks connected one after the other, arranged from high to low to form a high embankment type chassis misuse feature. The heights of the four cement blocks from front to back are 130mm, 110mm, 90mm and 80mm respectively, and the length of each cement block is 5m and the width is 6m.

[0014] In the above plan, a fire rescue site is set up outside the intersection of the first connecting lane and the second starting and ending area to facilitate rescue operations in case of an emergency.

[0015] The first connecting lane is entirely a straight section, while the second connecting lane has a straight section at the beginning and a curved section at the end. The entrance / exit is located on the straight section of the second connecting lane. This compact road layout reduces the logistics time for test vehicles to travel between different test sites to verify chassis misuse conditions.

[0016] The beneficial effects of this invention are: by arranging road features such as deep pits, high embankments, and protrusions together and connecting them in series and parallel using connecting lanes, it is possible to efficiently verify a systematic chassis misuse condition, shorten the logistics time of test vehicles between different test sites for verifying chassis misuse conditions, and save cycle and cost for chassis misuse development and verification in automobile R&D. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the present invention.

[0018] Figure 2 This is a cross-sectional schematic diagram of the first straight lane in this invention.

[0019] Figure 3 This is a cross-sectional schematic diagram of the second straight lane in this invention.

[0020] Figure 4 This is a cross-sectional schematic diagram of the third straight lane in this invention.

[0021] Figure 5 This is a cross-sectional schematic diagram of the fourth straight lane in this invention.

[0022] Figure 6 This is a cross-sectional schematic diagram of the fifth straight lane in this invention.

[0023] Figure 7 This is a cross-sectional schematic diagram of the sixth straight lane in this invention.

[0024] Figure 8 This is a schematic diagram of the high-ridge type road feature in this invention. Detailed Implementation

[0025] like Figure 1As shown in Figure 8, a special test track for automobile chassis misuse mainly consists of a deep pit-type feature road 1, a raised feature road 2, and a high embankment-type feature road 3 arranged side by side, as well as a first connecting lane 4 and a second connecting lane 5.

[0026] The road with deep pit features 1 has a chassis misuse feature, the road with raised features 2 has a chassis misuse feature, and the road with high embankments features 3 has a chassis misuse feature; and the front ends of the road with deep pit features 1, the road with raised features 2, the first connecting lane 4, and the second connecting lane 5 are all connected to the first start-end area A, and the rear ends are all connected to the second start-end area B. The distance between the first start-end area A and the second start-end area B is 300mm.

[0027] A curved connecting section 51 is provided on the second connecting lane 5, and the high-ridge characteristic road 3 is connected in parallel on the curved connecting section 51; and the first connecting lane 4 and the second connecting lane 5 are located on the left and right sides of the three types of characteristic roads respectively, so that the first connecting lane 4, the first start and end area A, the second connecting lane 5 and the second start and end area B are spliced ​​together to form a circular lane that surrounds the three types of characteristic roads, and an entrance and exit C is provided on the circular lane.

[0028] Ideally, the deep-pit-type road 1 includes three straight lanes: a first straight lane 11, a second straight lane 12, and a third straight lane 13. Each straight lane has a square pit, and the three square pits contain three different deep-pit-type chassis misuse features. The deep-pit-type chassis misuse feature of the first straight lane 11 is located 100m from the first start-end area A, the deep-pit-type chassis misuse feature of the second straight lane 12 is located 30m from the second start-end area B, and the deep-pit-type chassis misuse feature of the third straight lane 13 is located 50m from the first start-end area A. The three straight lanes are used to deploy three different deep-pit-type chassis misuse features, allowing for the deployment of three typical deep-pit-type chassis misuse features.

[0029] Ideally, the pit-type chassis misuse feature of the first straight lane 11 includes a flat bottom surface of the pit; the pit-type chassis misuse feature of the second straight lane 12 includes a pit with another pit on the bottom surface; and the pit-type chassis misuse feature of the third straight lane 13 includes a curved bottom surface of the pit. These three distinct pit-type chassis misuse features are used to conduct three misuse condition tests.

[0030] Ideally, the raised-type feature road 2 includes three straight lanes: a fourth straight lane 21, a fifth straight lane 22, and a sixth straight lane 23. Three different raised-type chassis misuse features are arranged on these three straight lanes. The raised-type chassis misuse feature of the fourth straight lane 21 is located 60m from the second start-end area B, the raised-type chassis misuse feature of the fifth straight lane 22 is located 50m from the first start-end area A, and the raised-type chassis misuse feature of the sixth straight lane 23 is located 70m from the first start-end area A. These three straight lanes are used to arrange three different raised-type chassis misuse features, allowing for the arrangement of three typical raised-type chassis misuse features.

[0031] Ideally, the chassis misuse characteristics of the fourth straight lane 21 include a single-step convexity, the fifth straight lane 22 include a two-step convexity, and the sixth straight lane 23 include an arched convexity. These three distinct chassis misuse characteristics are used to conduct tests under three different misuse conditions.

[0032] Ideally, the dedicated test area for vehicle chassis misuse also includes a seventh straight lane 6, which is adjacent to and parallel to the sixth straight lane 23. The seventh straight lane 6 is a reserved lane for future expansion features, and no chassis misuse features are set on it to facilitate the addition of other chassis misuse features in the future.

[0033] The width of the first straight lane 11 to the seventh straight lane 6 is 3m, and the width of the first connecting lane 4 and the second connecting lane 5 is 5m.

[0034] Ideally, the overall slope of the dedicated test site for vehicle chassis misuse testing should be 0.1%, with a drainage ditch D at the lowest point of the slope to facilitate drainage of the dedicated test site.

[0035] Ideally, the high-embankment type feature road 3 includes four cement blocks connected one after the other, arranged from high to low to form a high-embankment type chassis misuse feature. The heights of the four cement blocks from front to back are 130mm, 110mm, 90mm and 80mm respectively, and the length and width of the four cement blocks are all 5m and 6m respectively.

[0036] Ideally, a fire and rescue site E should be set up outside the intersection of the first connecting lane 4 and the second starting and ending area B to facilitate rescue operations in case of an emergency.

[0037] Ideally, the first connecting lane 4 should be a straight section, and the second connecting lane 5 should have a straight section at the beginning and a curved section at the end. The entrance / exit C should be located on the straight section of the second connecting lane 5. This compact road layout reduces the time it takes for test vehicles to move between different test sites to verify chassis misuse conditions.

[0038] Example 1

[0039] The test vehicle entered the second connecting lane 4 from entrance / exit C and drove forward to the first start / end area A. It first drove to the first straight lane 11, executing the deep-pit characteristic of that lane. After reaching the second start / end area B, it returned to the first start / end area A along the first connecting lane 4. Then, it drove to the second straight lane 12, executing the deep-pit characteristic of that lane. After reaching the second start / end area B, it returned to the first start / end area A again along the first connecting lane 4. Next, it drove to the fifth straight lane 22, executing the raised-edge characteristic of that lane. After reaching the second start / end area B, it continued to return to the first start / end area A along the first connecting lane 4. Finally, it drove along the second connecting lane 5 to the high-edge characteristic road 3, executing the high-edge characteristic. After completing the test, it sequentially drove along the second start / end area B, the first connecting lane 4, the first start / end area A, and the first section of the second connecting lane 5, returning to entrance / exit C. The test vehicle completed the chassis misuse condition verification for deep-pit, raised-edge, and high-edge types within one working day.

[0040] Example 2

[0041] The test vehicle entered the second connecting lane 4 from entrance / exit C and drove forward to the first start / end area A. It then drove to the second straight lane 12 to perform the deep-pit characteristic of that lane. After reaching the second start / end area B, it returned to the first start / end area A along the first connecting lane 4, and then drove to the third straight lane 13 to perform the deep-pit characteristic of that lane. The vehicle's underbody protection plate detached. It then drove along the second start / end area B, the first connecting lane 4, the first start / end area A, and the first section of the second connecting lane 5, returning to entrance / exit C to reach the workshop for repair. After repair, it drove from entrance / exit C along the second connecting lane 5 to the high-embankment characteristic road 3 to perform the high-embankment characteristic test. After completing the test, it drove sequentially along the second start / end area B, the first connecting lane 4, the first start / end area A, and the first section of the second connecting lane 5, returning to the site entrance / exit C. The test vehicle completed the verification of deep-pit and high-embankment chassis misuse conditions within one working day.

Claims

1. A dedicated testing ground for automobile chassis misuse testing, characterized in that: The road includes a deep-pit type feature road (1), a raised-shaped feature road (2), and a high-ridge type feature road (3) arranged side by side, as well as a first connecting lane (4) and a second connecting lane (5). The deep-pit type feature road (1) is equipped with a deep-pit type chassis misuse feature, the raised-shaped feature road (2) is equipped with a raised-shaped chassis misuse feature, and the high-ridge type feature road (3) is equipped with a high-ridge type chassis misuse feature. The front ends of the deep-pit type feature road (1), the raised-shaped feature road (2), the first connecting lane (4), and the second connecting lane (5) are all connected to the first start and end area. (A) Connects to the second starting and ending area (B) and the rear end is connected to the second starting and ending area (B). A curved connecting section (51) is set on the second connecting lane (5). The high embankment characteristic road (3) is connected in parallel on the curved connecting section (51). The first connecting lane (4) and the second connecting lane (5) are located on the left and right sides of the three types of characteristic roads respectively, so that the first connecting lane (4), the first starting and ending area (A), the second connecting lane (5) and the second starting and ending area (B) are spliced ​​together to form a loop lane that surrounds the three types of characteristic roads. An entrance and exit (C) is set on the loop lane. The deep pit-type feature road (1) includes three straight lanes, namely the first straight lane (11), the second straight lane (12) and the third straight lane (13). Each straight lane is provided with a square pit. The three square pits are provided with three different deep pit-type chassis misuse features. The deep pit-type chassis misuse feature of the first straight lane (11) is located 100m away from the first start and end area (A). The deep pit-type chassis misuse feature of the second straight lane (12) is located 30m away from the second start and end area (B). The deep pit-type chassis misuse feature of the third straight lane (13) is located 50m away from the first start and end area (A). The raised feature road (2) includes three straight lanes, namely the fourth straight lane (21), the fifth straight lane (22) and the sixth straight lane (23). Three different raised chassis misuse features are arranged on the three straight lanes. The raised chassis misuse feature of the fourth straight lane (21) is set at 60m from the second start-end area (B). The raised chassis misuse feature of the fifth straight lane (22) is set at 50m from the first start-end area (A). The raised chassis misuse feature of the sixth straight lane (23) is set at 70m from the first start-end area (A). The high-embankment type characteristic road (3) includes four cement blocks connected in sequence. The four cement blocks are arranged from high to low to form a high-embankment type chassis misuse characteristic. The heights of the four cement blocks from front to back are 130mm, 110mm, 90mm and 80mm respectively. The length of the four cement blocks is 5m and the width is 6m.

2. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: The misuse characteristics of the deep pit chassis of the first straight lane (11) include that the bottom surface of the deep pit is flat, the misuse characteristics of the deep pit chassis of the second straight lane (12) include that the bottom surface of the deep pit is further provided with a deep pit, and the misuse characteristics of the deep pit chassis of the third straight lane (13) include that the bottom surface of the deep pit is curved.

3. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: The convex chassis misuse feature of the fourth straight lane (21) includes a convex shape that is a first-level step, the convex chassis misuse feature of the fifth straight lane (22) includes a convex shape that is a second-level step, and the convex chassis misuse feature of the sixth straight lane (23) includes a convex shape that is an arch.

4. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: The dedicated test site for vehicle chassis misuse also includes a seventh straight lane (6), which is adjacent to and parallel to the sixth straight lane (23). The seventh straight lane (6) is a reserved extended feature lane, on which no chassis misuse feature is provided.

5. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: The dedicated test track for automobile chassis misuse testing has an overall slope of 0.1%, with a drainage ditch (D) installed at the lowest point of the slope.

6. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: A fire rescue site (E) is set up outside the intersection of the first connecting lane (4) and the second start and end area (B).

7. The dedicated testing ground for automobile chassis misuse testing according to claim 1, characterized in that: The first connecting lane (4) is a straight connecting section as a whole, the second connecting lane (5) has a straight connecting section at the front and a curved connecting section at the rear, and the entrance / exit (C) is located on the straight connecting section of the second connecting lane (5).

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