Automobile ABS test bench capable of extending passing axle in one direction

Abstract

An automobile ABS test bench capable of extending vehicle passing axles in one direction is characterized in that a front roller set and a rear roller set are installed in a first roller frame and a second roller frame respectively, two vehicle passing axles are installed on the two sides of the first roller frame, and the vehicle passing axles are movably connected with a supporting table; the output end of the telescopic cylinder is connected with the position, close to the upper end face, of the side face of the vehicle passing axle. By arranging the two sets of telescopic cylinders and the movable vehicle passing axle and the front roller set, the distance between the front roller set and the rear roller set can be adjusted through the two sets of telescopic cylinders, then the test bed achieves detection of vehicles with different wheelbases, the adjustment time can be shortened through the arrangement of the two sets of telescopic cylinders, the preparation time of vehicle detection is saved, and the detection efficiency is improved. And the telescopic cylinder is arranged at the edge of the upper end of the foundation pit, so that installation is convenient, and maintenance and disassembly are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile test benches, in particular to an automobile ABS test bench which can be extended in one direction over a vehicle bridge. Background Art

[0002] There are two common testing methods for testing vehicle performance. One is to test directly on the road, that is, to test various data during normal driving of the vehicle. Although this type of test is more accurate in terms of results, it occupies a large area and has a high construction cost, and is more affected by the environment. Therefore, simulation testing is currently more commonly used on the market. Using an ABS test bench to test vehicle performance takes up relatively less space and costs, and the test speed is faster and has higher repeatability.

[0003] The applicant has applied for a motor-driven internal gear rotary intelligent connected vehicle ABS test bench, with patent number CN218330600U. The test bench can not only detect the working condition of the ABS when the intelligent connected vehicle is driving in a straight line, but also detect the ABS performance of the intelligent connected vehicle when it is turning in an emergency avoidance direction. The distance between the roller groups can be adjusted through the retractable device to adapt to different wheelbases. However, the inventor found in actual use that installing the retractable device on the rotating platform has certain shortcomings. On the one hand, the structure of the test bench at the bottom of the foundation is relatively complex, and the installation of the retractable device is somewhat difficult. On the other hand, the retractable device basically adopts the form of a retractable cylinder, which suffers great wear and tear after long-term use and requires maintenance or regular inspection. However, due to the relatively complex test bench, it is difficult to disassemble or inspect the retractable device alone, and more components need to be disassembled simultaneously, which is more troublesome. In addition, the unilateral drive axle moves, and the movement speed is relatively slow, which accelerates the wear and tear of the retractable cylinder. Utility Model Content

[0004] In order to solve the technical problems existing in the above-mentioned background technology, the utility model provides an automobile ABS test bench which can be extended unidirectionally across the vehicle bridge.

[0005] The technical solution of this utility model is as follows:

[0006] An automobile ABS test bench that can be extended across a vehicle bridge in one direction comprises a support platform installed in a foundation pit, two groups of front roller groups and two groups of rear roller groups are installed on the support platform at intervals, and the front roller groups and the rear roller groups are connected by a synchronous adjustment device and can rotate synchronously.

[0007] The front roller group and the rear roller group are installed in the first roller frame and the second roller frame respectively, and two groups of vehicle bridges are installed on both sides of the first roller frame, and the vehicle bridges are movably connected to the support platform;

[0008] A telescopic cylinder is arranged at the upper edge of the foundation pit, and the output end of the telescopic cylinder is connected to the side of the vehicle bridge near the upper end surface, a support plate is arranged on the support platform between the front roller group and the rear roller group, and a bridge plate is fixed to the top of one side of the foundation pit near the front roller frame and the top of the support plate, and the vehicle bridge is slidably connected to the bridge plate.

[0009] In order to improve the efficiency of the axle adjustment and achieve the purpose of quickly adjusting the wheelbase, two groups of telescopic cylinders are provided, one group is installed with the foundation pit through the bracket, and the other group is fixed with the second roller frame.

[0010] In order to improve the stability of the bridge during movement, guide it and prevent it from deflecting, an L-shaped groove is provided at the bottom of the bridge plate, and the opening of the L-shaped groove faces the bridge, a limiting slide bar is installed at the top of the L-shaped groove, and a guide slide groove for the sliding of the limiting slide bar is provided on the upper end surface of the bridge.

[0011] In order to further improve the stability when moving across the bridge, two limit slide bars are arranged along the upper end surface of the L-shaped groove, and two corresponding guide slide grooves are opened.

[0012] In order to facilitate vehicles to enter and exit, ramp plates are arranged at both ends of the bridge plate.

[0013] In order to mitigate the impact of inertia after the bridge moves and protect the telescopic cylinder, a buffer component is installed in the foundation pit, and the buffer component is located below the output end of the telescopic cylinder, which can buffer it when the bridge moves.

[0014] In order to provide a buffering effect to the axles on both sides of the front roller group, two groups of buffering components are provided, and are respectively installed on the foundation pit and the side wall of the support plate close to the front roller group.

[0015] The specific design of the buffer assembly is that the buffer assembly includes a bottom plate fixed to the foundation pit or the support plate, and a fixing rod is installed on the side of the bottom plate facing the vehicle bridge, a buffer spring is sleeved on the outer side of the fixing rod, and a buffer plate is connected to the side of the buffer spring away from the bottom plate;

[0016] The fixing rod is arranged through the buffer plate, and a buffer hole having the same diameter as the fixing rod is opened at the same height as the fixing rod on the side of the axle.

[0017] In order to improve the buffering capacity of the buffer assembly, two fixing rods are vertically arranged along the bottom plate.

[0018] The beneficial effects of the utility model are as follows: the utility model is a vehicle ABS test bench with a unidirectionally extendable axle. Firstly, by arranging two groups of front roller groups and two groups of rear roller groups in a foundation pit, it is possible to support four movable wheels of the vehicle, and by a synchronous adjustment device, it is possible to drive synchronous rotation, thereby realizing a performance simulation test of the vehicle; secondly, by arranging two groups of telescopic cylinders and a movable axle and a front roller group, the distance between the front and rear roller groups can be adjusted by the two groups of telescopic cylinders, thereby enabling the test bench to realize the test of vehicles with different wheelbases, and the arrangement of the two groups of telescopic cylinders can speed up the adjustment time and save the preparation time for vehicle testing, and the telescopic cylinders are arranged at the upper edge of the foundation pit, which is convenient for installation on the one hand and for maintenance and disassembly on the other hand; finally, by arranging a buffer component, the impact caused by the inertia of the axle and other components can be reduced after the adjustment, and the impact on the output end of the telescopic cylinder can be reduced, which is beneficial to protecting the normal use of the telescopic cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only used to illustrate the preferred embodiment and are not considered to be limiting of the present invention.

[0020] In the attached picture:

[0021] Figure 1 It is a partial cross-sectional front view of the test bench;

[0022] Figure 2 The schematic diagram of the bridge plate structure is as follows;

[0023] Figure 3 This is the enlarged view of point A;

[0024] The components represented by the reference numerals in the figure are:

[0025] 1. Foundation pit; 2. Support platform; 3. Front roller group; 4. Rear roller group; 5. First roller frame; 6. Second roller frame; 7. Axle; 8. Telescopic cylinder; 9. Support plate; 10. Bridge plate; 11. Bracket; 12. L-shaped groove; 13. Limiting slide bar; 14. Guide slide groove; 15. Ramp plate; 16. Buffer assembly; 161. Bottom plate; 162. Fixed rod; 163. Buffer spring; 164. Buffer plate; 17. Buffer hole; 18. Moving wheel. DETAILED DESCRIPTION

[0026] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0027] Example

[0028] As mentioned in the background technology, the ABS test bench previously used by the applicant can test various performances of the automobile, but there are certain deficiencies in adjusting the spacing between the roller groups for use with vehicles of different wheelbases. The drive device for adjusting the roller group is installed on a rotating platform, but there are many mechanical parts at the bottom of the test bench, which is troublesome to install, and it is difficult to inspect or disassemble the drive device separately. Moreover, the one-sided drive causes the drive device to be subjected to greater force, which will accelerate the damage of the drive device. Therefore, the inventor has made improvements on the basis of its existing test bench and designed a new test bench for adjusting the wheelbase, which is described in detail below with reference to the drawings.

[0029] This embodiment provides an automobile ABS test bench that can be extended across the vehicle bridge in one direction, see Figure 1 , an automobile ABS test bench that can be extended unidirectionally over a vehicle bridge 7, includes a support platform 2 installed in a foundation pit 1, and two groups of front roller groups 3 and two groups of rear roller groups 4 are installed on the support platform 2 at intervals. The two groups of front roller groups 3 and the two groups of rear roller groups 4 are arranged side by side to form a quadrilateral for supporting the wheels of the vehicle to be tested, and the front roller group 3 and the rear roller group 4 are connected by a synchronous adjustment device (not shown in the figure). The synchronous adjustment device specifically adopts a universal transmission assembly, which can make the two groups of front roller groups 3 and the two groups of rear roller groups 4 rotate synchronously, and can simulate the form state of the vehicle. The above designs are all consistent with the patent technology previously applied for by the applicant in the background technology, and no unnecessary details are given.

[0030] In this embodiment, the front roller group 3 and the rear roller group 4 are respectively installed in the first roller frame 5 and the second roller frame 6, and the installation method of the roller group and the roller frame is also consistent with the technology in the above-mentioned patent. The difference is that the first roller frame 5 in this scheme can move along the support platform 2, and then drive the front roller group 3 to move synchronously. Two groups of axles 7 are installed on both sides of the first roller frame 5. The structure of the axle 7 can adopt the technology in the above-mentioned patent, but the activity and connection method are the two points of this scheme, and the axles 7 are all movably connected to the support platform 2, that is, the axles 7 can make linear motion in the direction away from or close to the rear roller group 4, and in order to reduce the friction between the axles 7 and the support platform 2, a plurality of movable wheels 18 are installed at the bottom of the axles 7 and are rollingly connected to the support platform 2.

[0031] The movement of the overpass bridge 7 is mainly achieved by a driving device. In this solution, the driving device is in the form of a telescopic cylinder 8. Specifically, the telescopic cylinder 8 is provided with two groups, which can speed up the movement speed of the overpass bridge 7. One group is installed on the side of the foundation pit 1, located on the side of the overpass bridge 7 on the left side of the first roller frame 5 away from the front roller group 3. The side of the foundation pit 1 close to the front roller group 3 is provided with an installation space for installing the telescopic cylinder 8, which is installed with the foundation pit 1 through a bracket 11 and is arranged at the upper edge of the foundation pit 1. Moreover, the telescopic cylinder 8 can be arranged on one side or on both sides of the synchronous adjustment device connected to the roller group, as described in the patent document of the background technology. Figure 3 As shown, in order to synchronously adjust the left and right sides or one side of the device, the design method of its hydraulic cylinder is similar, but this scheme designs the telescopic cylinder 8 to the upper edge of the foundation pit 1, and the output end of the telescopic cylinder 8 is connected to the side of the vehicle bridge 7 near the upper end surface. The vehicle bridge 7 is moved by extending or retracting the telescopic cylinder 8, and then the first roller frame 5 is driven to move.

[0032] Secondly, in order to facilitate the installation of another group of telescopic cylinders 8, the number of this group of telescopic cylinders 8 is the same as that of the previous group, and it is also located on one side or both sides of the synchronous adjustment device. A support plate 9 is arranged on the support platform 2 between the front roller group 3 and the rear roller group 4. The upper end surface of the support plate 9 is flush with the vehicle bridge 7. Another group of telescopic cylinders 8 is fixed to the side of the second roller frame 6 close to the support plate 9, and the output end passes through the support plate 9 and is connected to the vehicle bridge 7 on the right side. When the wheelbase needs to be adjusted, the two groups of telescopic cylinders 8 work synchronously, one group pushes the corresponding vehicle bridge 7, and the other group pulls the corresponding vehicle bridge 7, which can speed up the adjustment of the position of the vehicle bridge 7, and steel plates fixed to the edge of the foundation pit 1 are arranged at the upper ends of the two groups of telescopic cylinders 8 for their protection.

[0033] In this embodiment, since the vehicle bridge 7 is movable, a gap will be generated at the upper end of the foundation pit 1 when it moves. In order to fill the gap and facilitate the passage of vehicles, a bridge plate 10 is fixed to the top of one side of the foundation pit 1 close to the front roller frame and the top of the support plate 9. The bridge plate 10 extends to the vehicle bridge 7, and the vehicle bridge 7 is slidably connected to the bridge plate 10. When the vehicle bridge 7 moves, the upper end of the foundation pit 1 is always kept sealed. In addition, in order to guide the vehicle bridge 7 when it moves and ensure that it moves in a straight line, an L-shaped groove 12 is opened at the bottom of the bridge plate 10. Figure 2 , and the L-shaped groove 12 opens toward the overpass 7, which is equivalent to the overpass plate 10 being buckled onto the overpass 7, a limiting slide bar 13 is installed at the top of the L-shaped groove 12, and a guide slide groove 14 for the sliding of the limiting slide bar 13 is provided on the upper end surface of the overpass 7, and in order to further ensure stability, two limiting slide bars 13 are provided along the upper end surface of the L-shaped groove 12, and two corresponding guide slide grooves 14 are provided, and when the overpass 7 moves, the guide slide groove 14 can slide along the limiting slide bar 13.

[0034] On the basis of the above structure, ramp plates 15 are arranged at both ends of the bridge plate 10. Such arrangement on both sides of the two bridge plates 10 can cushion the vehicles driving on and off the bridge plates 10, thereby reducing the wear of the vehicles on the bridge plates 10.

[0035] Since two groups of telescopic cylinders 8 are designed in this scheme, the adjustment speed of the overpass bridge 7 can be accelerated, but inertia will be generated successively, resulting in accelerated stability of the telescopic cylinder 8 loss. In order to overcome this problem, a buffer component 16 is designed in this scheme. Specifically, the buffer component 16 is designed with two groups, both of which are located below the output end of the telescopic cylinder 8 and located on the outside of the two groups of overpass bridges 7. It can play a buffering role when the overpass bridge 7 moves left and right. It is respectively installed on the foundation pit 1 and the support plate 9 near the side wall of the front roller group 3, and the buffer end is facing the side of the overpass bridge 7.

[0036] Specific, combined Figure 3 The buffer assembly 16 includes a bottom plate 161 fixed to the foundation pit 1 or the support plate 9, and a fixing rod 162 is installed on the side of the bottom plate 161 facing the overpass bridge 7, and a buffer spring 163 is sleeved on the outer side of the fixing rod 162. In order to improve the buffering effect, two fixing rods 162 are provided, and the outer sides of both fixing rods 162 are sleeved with buffer springs 163. The side of the buffer spring 163 away from the bottom plate 161 is connected with a buffer plate 164. The fixing rod 162 passes through the buffer plate 164, and the size of the buffer plate 164 is greater than the maximum distance between the two fixing rods 162, and the two fixing rods 162 pass through the buffer plate 164 is set, and a buffer hole 17 with the same diameter as the fixed rod 162 is opened on the side of the bridge 7 at the same height as the fixed rod 162. The number of the buffer holes 17 is consistent with the fixed rod 162. When the position of the bridge 7 is adjusted, the two groups of telescopic cylinders 8 push and pull the bridge 7 to move, and the bridge 7 can contact with the buffer plate 164. At this time, the fixed rod 162 is transmitted to the buffer hole 17, and the bridge 7 compresses the buffer spring 163 through the buffer plate 164. When the telescopic cylinder 8 stops working, the elastic force of the buffer spring 163 will offset most of the inertia of the bridge 7, effectively protecting the output end of the telescopic cylinder 8.

Claims

1. An automobile ABS test bench that can be extended in one direction across a vehicle bridge, comprising a support platform (2) installed in a foundation pit (1), two groups of front roller groups (3) and two groups of rear roller groups (4) are installed on the support platform (2) at intervals, and the front roller groups (3) and the rear roller groups (4) are connected by a synchronous adjustment device so as to be able to rotate synchronously, characterized in that: The front roller group (3) and the rear roller group (4) are respectively installed in a first roller frame (5) and a second roller frame (6); two groups of vehicle bridges (7) are installed on both sides of the first roller frame (5), and the vehicle bridges (7) are movably connected to the support platform (2); A telescopic cylinder (8) is provided at the upper edge of the foundation pit (1), and the output end of the telescopic cylinder (8) is connected to a position on the side of the vehicle bridge (7) close to the upper end surface, a support plate (9) is provided on the support platform (2) between the front roller group (3) and the rear roller group (4), and a bridge plate (10) is fixed to the top of one side of the foundation pit (1) close to the front roller frame and the top of the support plate (9), and the vehicle bridge (7) is slidably connected to the bridge plate (10).

2. The automobile ABS test bench capable of being extended unidirectionally across a vehicle bridge according to claim 1, characterized in that: The telescopic cylinders (8) are provided in two groups, one group being installed with the foundation pit (1) via a bracket (11), and the other group being fixed with the second roller frame (6).

3. The automobile ABS test bench capable of extending across the vehicle bridge in one direction according to claim 1, characterized in that: The bottom of the bridge plate (10) is provided with an L-shaped groove (12), and the opening of the L-shaped groove (12) faces the vehicle bridge (7). A limit slide bar (13) is installed at the top of the L-shaped groove (12), and a guide slide groove (14) for sliding the limit slide bar (13) is provided on the upper end surface of the vehicle bridge (7).

4. The automobile ABS test bench capable of being extended unidirectionally across a vehicle bridge according to claim 3 is characterized in that: Two limit slide bars (13) are arranged along the upper end surface of the L-shaped groove (12), and two guide slide grooves (14) are correspondingly provided.

5. The automobile ABS test bench capable of extending across the vehicle bridge in one direction according to claim 2 is characterized in that: Slope plates (15) are provided at both ends of the bridge plate (10).

6. The automobile ABS test bench capable of extending across the vehicle bridge in one direction according to claim 1, characterized in that: A buffer assembly (16) is installed in the foundation pit (1), and the buffer assembly (16) is located below the output end of the telescopic cylinder (8), and can buffer the vehicle bridge (7) when it moves.

7. The automobile ABS test bench capable of being extended unidirectionally across a vehicle bridge according to claim 6, characterized in that: The buffer assembly (16) is provided in two groups and is respectively installed on the foundation pit (1) and the side wall of the support plate (9) close to the front roller group (3).

8. The automobile ABS test bench capable of being extended unidirectionally across a vehicle bridge according to claim 7, characterized in that: The buffer assembly (16) comprises a bottom plate (161) fixed to the foundation pit (1) or the support plate (9), and a fixing rod (162) is installed on the side of the bottom plate (161) facing the vehicle bridge (7), a buffer spring (163) is sleeved on the outside of the fixing rod (162), and a buffer plate (164) is connected to the side of the buffer spring (163) away from the bottom plate (161); The fixing rod (162) is arranged to penetrate the buffer plate (164), and a buffer hole (17) having the same diameter as the fixing rod (162) is opened on the side of the vehicle bridge (7) at the same height as the fixing rod (162).

9. The automobile ABS test bench capable of being extended unidirectionally across a vehicle bridge according to claim 8, characterized in that: Two fixing rods (162) are vertically arranged along the bottom plate (161).

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