Four-wheel drive chassis dynamometer suitable for different wheelbases

Abstract

The utility model relates to the field of automobile detection auxiliary equipment, in particular to a four-wheel drive chassis dynamometer suitable for different wheelbases, which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a rear chassis dynamometer frame, the rear end of the rear chassis dynamometer frame is fixedly connected with an electric telescopic rod, and the output end of the electric telescopic rod is fixedly connected with a front chassis dynamometer frame. The front and rear sides in the front chassis dynamometer frame and the rear chassis dynamometer mechanism are rotatably connected with a second test roller and a first test roller respectively, and the rotating shaft end parts of the second test roller and the first test roller are connected with a second acceleration sensor and a first speed sensor respectively. The upper end of the bottom plate is connected with a limiting plate through a displacement adjusting assembly. According to the utility model, under the action of the limiting plate, the driving roller of the automobile can be blocked and limited, so that the probability that the automobile rushes out of a test station is reduced when the automobile is tested, and the automobile can be tested more smoothly.

Description

Technical Field

[0001] The utility model relates to the field of automobile detection auxiliary equipment, in particular to a four-wheel drive chassis dynamometer suitable for different wheelbases. Background Art

[0002] Chassis dynamometer is an indoor bench test equipment used to test the performance of automobile power, multi-condition emission indicators, fuel indicators, etc. The chassis dynamometer simulates the road surface through a roller, calculates the road simulation equation, and simulates it with a loading device to simulate various working conditions of the automobile. With the continuous development of automobile technology, four-wheel drive vehicles are developing at an astonishing speed, and four-wheel drive vehicles are gradually being liked by more and more people. In order to meet the increasingly enhanced requirements for four-wheel drive vehicle testing, it is necessary to invent a wheelbase adjustment device for four-wheel drive vehicle testing equipment, which can meet the testing of two-wheel drive vehicles and realize four-wheel drive vehicle testing at the same time.

[0003] At present, before testing a car, the driving wheels of the car are simply embedded between two test rollers. Since no additional blocking and limiting is performed on the driving wheels of the car, it is easy for the driving wheels of the car to rush out of the testing station during the test, and the car cannot be tested normally. Therefore, it is necessary to design a four-wheel drive chassis dynamometer suitable for different wheelbases. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a four-wheel drive chassis dynamometer suitable for different wheelbases.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a four-wheel drive chassis dynamometer suitable for different wheelbases, including a base plate, the upper end of the base plate is fixedly connected to a rear chassis dynamometer frame, the rear end of the rear chassis dynamometer frame is fixedly connected to an electric telescopic rod, the output end of the electric telescopic rod is fixedly connected to a front chassis dynamometer frame, the front chassis dynamometer frame is located at the upper end of the base plate and is slidably connected to the base plate, the front and rear sides of the front chassis dynamometer frame and the rear chassis dynamometer mechanism are respectively rotatably connected to a second test roller and a first test roller, the ends of the rotating shafts of the second test roller and the first test roller are respectively connected to an acceleration sensor 2 and a speed sensor 1, the upper end of the base plate is connected to a limit plate through a displacement adjustment component, and the limit plate is located at the rear end of the front chassis dynamometer frame.

[0006] Furthermore, a fixed shell is fixedly connected to the rear end of the rear chassis dynamometer frame, a movable plate is slidably connected inside the fixed shell, and the movable plate is fixedly mounted on the front end of the front chassis dynamometer frame.

[0007] Furthermore, the rear chassis dynamometer frame and the front chassis dynamometer frame are both slidably connected to support plates inside, each of the support plates is located between the first test roller and the second test roller, the two support plates are distributed front and back, and the lower ends of the two support plates are provided with lifting cylinders, the lifting cylinders located at the rear end are slidably connected to the base plate, and the output end of the lifting cylinders located at the rear end is fixedly connected to the support plate at the rear end, and the lifting cylinders located at the front end are fixedly installed in the base plate, and the output end of the lifting cylinders at the front end is fixedly connected to the support plate at the front end.

[0008] Furthermore, the displacement adjustment assembly includes a motor, a slide rail, a sliding block, a driving wheel, a driven wheel, a belt, a second sliding groove and a threaded rod. The upper end surface of the base plate is provided with a second sliding groove, the interior of the second sliding groove is rotatably connected with a threaded rod, the rear end of the threaded rod is fixedly connected with the driven wheel, the left and right ends of the base plate are respectively fixedly connected with the motor through a fixed frame, the output shaft end of the motor is fixedly connected with the driving wheel, the driving wheel and the driven wheel are connected by a belt, the circumferential surface of the threaded rod is threadedly connected with the sliding block, the sliding block is located in the second sliding groove and is slidably connected to the second sliding groove, the top end of the sliding block is fixedly connected with the slide rail, the slide rail is located at the upper end of the base plate, and the limit plate is slidably connected to the slide rail.

[0009] Furthermore, a roller is rotatably connected inside the limiting plate.

[0010] Furthermore, a first sliding groove is provided on the upper end surface of the bottom plate, and the lifting cylinder located at the rear end is located in the first sliding groove and is slidably connected to the first sliding groove.

[0011] The utility model has the following beneficial effects:

[0012] Compared with the prior art, this four-wheel drive chassis dynamometer suitable for different wheelbases can block and limit the driving roller of the automobile under the action of the limit plate, so that when the automobile is tested, the probability of the automobile rushing out of the test station is reduced, and the automobile can be tested more smoothly. Under the action of the displacement adjustment component, the position of the limit plate can be conveniently adjusted so that the limit plate can be more accurately blocked at the rear end of the automobile driving wheel, so that the limit plate can better realize the limiting and blocking functions. In addition, the limit plate and the displacement adjustment component are easy to disassemble. When the limit plate is damaged after long-term use, it can be replaced regularly to better realize the function. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a four-wheel drive chassis dynamometer suitable for different wheelbases proposed by the utility model from a top view;

[0014] Figure 2A four-wheel drive chassis dynamometer suitable for different wheelbases proposed by the utility model Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0015] Figure 3 This is a schematic diagram of the structure of a four-wheel drive chassis dynamometer suitable for different wheelbases proposed by the utility model, after the rear chassis dynamometer frame, the front chassis dynamometer frame and the support plate are split apart from a top view;

[0016] Figure 4 A four-wheel drive chassis dynamometer suitable for different wheelbases proposed by the utility model Figure 3 A schematic diagram of the enlarged structure of B;

[0017] Figure 5 A four-wheel drive chassis dynamometer suitable for different wheelbases proposed by the utility model Figure 4 Schematic diagram of the structure viewed from above.

[0018] Legend:

[0019] 1. Base plate; 2. Front chassis dynamometer frame; 3. Rear chassis dynamometer frame; 4. First test roller; 5. Second test roller; 6. Support plate; 7. Electric telescopic rod; 8. Fixed shell; 9. Moving plate; 10. Limit plate; 11. Roller; 12. Slide rail; 13. Lifting cylinder; 14. Motor; 15. Driving wheel; 16. Belt; 17. Driven wheel; 18. First sliding groove; 19. Second sliding groove; 20. Threaded rod; 21. Sliding block; 22. Speed ​​sensor 1; 23. Acceleration sensor 2. DETAILED DESCRIPTION

[0020] Reference Figure 1-5The utility model provides a four-wheel drive chassis dynamometer suitable for different wheelbases, including a base plate 1, the upper end of the base plate 1 is fixedly connected to a rear chassis dynamometer frame 3, the rear end of the rear chassis dynamometer frame 3 is fixedly connected to an electric telescopic rod 7, the output end of the electric telescopic rod 7 is fixedly connected to a front chassis dynamometer frame 2, the front chassis dynamometer frame 2 is located at the upper end of the base plate 1, and is slidably connected to the base plate 1, the front chassis dynamometer frame 2 and the rear chassis dynamometer mechanism are rotatably connected to a second test roller 5 and a first test roller 4 on both the front and rear sides thereof, the second test roller 5 and the first test roller 4 are respectively connected to the ends of the rotating shafts of the second test roller 5 and the first test roller 4 with an acceleration sensor 2 23 and a speed sensor 1 22, the upper end of the base plate 1 is connected to a limit plate 10 through a displacement adjustment component, and the limit plate 10 is located at the rear end of the front chassis dynamometer frame 2. When working, before use, first adjust the distance between the front chassis dynamometer frame 2 and the rear chassis dynamometer frame 3 according to the axial distance of the driving wheels of the vehicle to be tested. Specifically, control the operation of the electric telescopic rod 7 to drive the front chassis dynamometer frame 2 to move forward and backward along the bottom plate 1 until the front chassis dynamometer frame 2 moves to a suitable position, close the electric telescopic rod 7, and then install the limit plate 10 on the displacement adjustment component, and use the displacement adjustment component to adjust the limit plate 10 to a suitable position, and then drive the vehicle to the rear chassis dynamometer frame 3 until the front wheel of the vehicle is located between the first test roller 4 and the second test roller 5 on the front chassis dynamometer frame 2, and the rear wheel of the vehicle is located between the first test roller 4 and the second test roller 5 on the front chassis dynamometer frame 2. Located between the first test roller 4 and the second test roller 5 on the rear chassis dynamometer frame 3, the limit plate 10 at this time can block the rear end of the front wheel of the car, and then control the rotation of the driving wheel of the car, and will drive the first test roller 4 and the second test roller 5 to rotate, and at the same time, the speed sensor 1 22 and the acceleration sensor 2 23 will sense the speed and acceleration of the first test roller 4 and the second test roller 5, and the generated data will be uploaded to the external control end under the action of the controller for observation and analysis by the staff (the speed sensor 1 22, the acceleration sensor 2 23, the controller and the external control end are all existing technologies) to finally complete the test operation of the car driving wheel.

[0021] Furthermore, a fixed shell 8 is fixedly connected to the rear end of the rear chassis dynamometer frame 3, a movable plate 9 is slidably connected to the interior of the fixed shell 8, and the movable plate 9 is fixedly mounted on the front end of the front chassis dynamometer frame 2. During operation, the front chassis dynamometer frame 2 can move forward and backward more stably under the cooperation of the fixed shell 8 and the movable plate 9.

[0022] Furthermore, the rear chassis dynamometer frame 3 and the front chassis dynamometer frame 2 are both slidably connected to the interior of the support plate 6, each support plate 6 is located between the first test roller 4 and the second test roller 5, the two support plates 6 are distributed front and back, and the lower ends of the two support plates 6 are provided with lifting cylinders 13, the lifting cylinder 13 located at the rear end is slidably connected to the bottom plate 1, and the output end of the lifting cylinder 13 located at the rear end is fixedly connected to the support plate 6 at the rear end, and the lifting cylinder 13 located at the front end is fixedly installed in the bottom plate 1, and the output end of the front end lifting cylinder 13 is fixedly connected to the support plate 6 at the front end. When working, controlling the operation of the lifting cylinder 13 can drive the support plate 6 to move up and down, and as the support plate 6 moves upward, the car can be lifted up, so that the four driving wheels of the car are in a just-contact state with the first test roller 4 and the second test roller 5, so as to facilitate the subsequent testing of the car's driving wheels.

[0023] Furthermore, the displacement adjustment component includes a motor 14, a slide rail 12, a sliding block 21, a driving wheel 15, a driven wheel 17, a belt 16, a second sliding groove 19 and a threaded rod 20. The upper end surface of the base plate 1 is provided with a second sliding groove 19, and the second sliding groove 19 is internally rotatably connected with a threaded rod 20, and the rear end of the threaded rod 20 is fixedly connected with the driven wheel 17. The left and right ends of the base plate 1 are respectively fixedly connected with the motor 14 through a fixed frame, and the output shaft end of the motor 14 is fixedly connected with the driving wheel 15. The driving wheel 15 and the driven wheel 17 are connected by a belt 16. The circumferential surface of the threaded rod 20 is threadedly connected with a sliding block 21, and the sliding block 21 is located in the second sliding groove 19 and is slidably connected to the second sliding groove 19. The top of the sliding block 21 is fixedly connected with the slide rail 12, and the slide rail 12 is located at the upper end of the base plate 1, and the limit plate 10 is slidably connected to the slide rail 12. During operation, first slide the limit plate 10 on the outer surface of the slide rail 12, then control the motor 14 to drive the driving wheel 15 to rotate, then under the action of the belt 16, the driven wheel 17 can be driven to rotate, and then the threaded rod 20 can be driven to rotate, then the sliding block 21 can drive the slide rail 12 to move forward and backward along the second sliding groove 19, and then drive the limit plate 10 to move forward and backward, until the limit plate 10 moves to a suitable position, the limit plate 10 can be used to block and limit the two driving wheels of the car, so that when the car is tested, the probability of the car rushing out of the test station is reduced, and the car can be tested more smoothly.

[0024] Furthermore, the inner part of the limit plate 10 is rotatably connected with a roller 11. When working, the existence of the roller 11 reduces the friction between the vehicle driving wheel and the limit plate 10, thereby reducing the influence of the limit plate 10 on the detection result.

[0025] Furthermore, a first sliding groove 18 is provided on the upper end surface of the bottom plate 1, and the lifting oil cylinder 13 at the rear end is located in the first sliding groove 18 and is slidably connected with the first sliding groove 18. During operation, the existence of the first sliding groove 18 is unlikely to affect the forward and backward movement of the front chassis dynamometer frame 2 and the rear end lifting oil cylinder 13, so that both can be used more smoothly.

[0026] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A four-wheel drive chassis dynamometer suitable for different wheelbases, comprising a bottom plate (1), characterized in that: The upper end of the base plate (1) is fixedly connected to a rear chassis dynamometer frame (3); the rear end of the rear chassis dynamometer frame (3) is fixedly connected to an electric telescopic rod (7); the output end of the electric telescopic rod (7) is fixedly connected to a front chassis dynamometer frame (2); the front chassis dynamometer frame (2) is located at the upper end of the base plate (1) and is slidably connected to the base plate (1); the front and rear sides of the front chassis dynamometer frame (2) and the rear chassis dynamometer mechanism are rotatably connected to a second test roller (5) and a first test roller (4); the ends of the rotating shafts of the second test roller (5) and the first test roller (4) are respectively connected to an acceleration sensor 2 (23) and a speed sensor 1 (22); the upper end of the base plate (1) is connected to a limit plate (10) via a displacement adjustment component; the limit plate (10) is located at the rear end of the front chassis dynamometer frame (2).

2. A four-wheel drive chassis dynamometer suitable for different wheelbases according to claim 1, characterized in that: The rear end of the rear chassis dynamometer frame (3) is fixedly connected to a fixed shell (8), the interior of the fixed shell (8) is slidably connected to a movable plate (9), and the movable plate (9) is fixedly mounted on the front end of the front chassis dynamometer frame (2).

3. The four-wheel drive chassis dynamometer applicable to different wheelbases according to claim 1, characterized in that: The rear chassis dynamometer frame (3) and the front chassis dynamometer frame (2) are both slidably connected to support plates (6), each of the support plates (6) is located between the first test roller (4) and the second test roller (5), the two support plates (6) are distributed front and back, and the lower ends of the two support plates (6) are each provided with a lifting cylinder (13), the lifting cylinder (13) located at the rear end is slidably connected to the bottom plate (1), and the output end of the lifting cylinder (13) located at the rear end is fixedly connected to the support plate (6) at the rear end, and the lifting cylinder (13) located at the front end is fixedly installed in the bottom plate (1), and the output end of the lifting cylinder (13) at the front end is fixedly connected to the support plate (6) at the front end.

4. The four-wheel drive chassis dynamometer applicable to different wheelbases according to claim 1, characterized in that: The displacement adjustment component comprises a motor (14), a slide rail (12), a slide block (21), a driving wheel (15), a driven wheel (17), a belt (16), a second sliding groove (19) and a threaded rod (20); the upper end surface of the base plate (1) is provided with a second sliding groove (19); the interior of the second sliding groove (19) is rotatably connected to a threaded rod (20); the rear end of the threaded rod (20) is fixedly connected to the driven wheel (17); the left and right ends of the base plate (1) are respectively fixedly connected to the motor (14) via a fixing frame; The output shaft end of the motor (14) is fixedly connected to a driving wheel (15), and the driving wheel (15) and the driven wheel (17) are connected via a belt (16). The circumferential surface of the threaded rod (20) is threadedly connected to a sliding block (21), and the sliding block (21) is located in a second sliding groove (19) and is slidably connected to the second sliding groove (19). The top end of the sliding block (21) is fixedly connected to a sliding rail (12), and the sliding rail (12) is located at the upper end of the bottom plate (1), and the limiting plate (10) is slidably connected to the sliding rail (12).

5. The four-wheel drive chassis dynamometer applicable to different wheelbases according to claim 1, characterized in that: The limiting plate (10) is rotatably connected to a roller (11) inside.

6. The four-wheel drive chassis dynamometer applicable to different wheelbases according to claim 3, characterized in that: The upper end surface of the bottom plate (1) is provided with a first sliding groove (18), and the lifting cylinder (13) located at the rear end is located in the first sliding groove (18) and is slidably connected to the first sliding groove (18).

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