Automobile driving condition test bench structure

Abstract

The invention discloses an automobile driving condition test bench structure which comprises a bench body, a transverse notch is formed in the surface of a bottom carrier roller in the length direction, a top plate is arranged in the transverse notch, and a pushing mechanism is used for controlling the top plate to ascend and descend in the transverse notch; and a water tank is arranged between the two bottom carrier rollers at the bottom in the test cavity. The rotation speed of the bottom carrier roller can be measured through the ring counter, so that the differential speed between each wheel of the automobile and the corresponding bottom carrier roller in the running process can be obtained, and the detection precision is improved; in the tire rotating process, the top plate plays a role in bumping, and then the position change of the automobile suspension or the chassis can be measured through the position sensor, so that the data of the automobile suspension system can be measured; water is sprayed to the bottom carrier roller through the nozzle, and the differential speed between the tire and the bottom carrier roller under the influence of rainwater is obtained.

Description

Technical Field

[0001] The invention relates to the technical field of automobile performance testing equipment, and in particular to an automobile driving condition testing bench structure. Background Art

[0002] The automobile chassis dynamometer is an important automobile experimental equipment. It is a desktop experimental system for completing automobile whole vehicle experiments. It can simulate road loads of various working conditions in automobile road experiments, and complete automobile economy tests, power tests, emission performance and analysis, reliability tests, and special experiments related to automobile transmission indoors. It is an essential large-scale equipment for automobile experimental research, product development, and quality inspection. Compared with conventional road tests, using an automobile chassis dynamometer to complete automobile experiments indoors has the advantages of fast speed, high precision, and low cost.

[0003] Existing chassis dynamometers, because their rollers are coaxially connected and the rollers run simultaneously and cannot run independently, cannot accurately detect the working conditions of each wheel of the car during driving, resulting in reduced accuracy of detection data. At the same time, they cannot test the car according to different road conditions, resulting in a smaller test range. Summary of the invention

[0004] The object of the present invention is to provide a vehicle driving condition test bench structure to solve the problems of low accuracy and small test range of existing condition tests mentioned in the above background technology.

[0005] According to one aspect of the present disclosure, the following technical solution is provided: a vehicle driving condition test bench structure, comprising a bench body, a sandwich compartment is fixedly installed in the middle of the bench body, a test cavity is formed inside the bench body at both sides of the sandwich compartment, bottom rollers are rotatably installed at both ends of the test cavity, and side rollers are rotatably installed at the upper positions on both sides of the bottom roller inside the test cavity;

[0006] The bottom roller surface is provided with a transverse slot along the length direction, a top plate is provided in the transverse slot, and a push mechanism is provided inside the bottom roller, and the push mechanism is used to control the lifting and lowering of the top plate in the transverse slot;

[0007] A water tank is installed at the bottom of the test chamber between the two bottom rollers, and nozzles facing the bottom rollers at corresponding positions are installed at both ends of the upper part of the water tank;

[0008] The sandwich bin is provided with receiving openings on both sides above the bottom rollers, in which slide plates are slidably installed, and a position sensor is fixedly installed on the upper part of the slide plate. A rotary push mechanism is provided inside the sandwich bin at the position of the position sensor, and the rotary push mechanism is used to control the sliding of two slide plates in relative positions.

[0009] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, the pushing mechanism includes a guide rail and a screw motor, the guide rail is fixedly installed at the internal axis position of the bottom roller, the guide rail is arranged along the length direction of the bottom roller, two sliders are slidably installed on the guide rail, a threaded hole is opened in the middle of the slider, a pull rod is movably hinged at the upper end of the slider, and the upper end of the pull rod is movably hinged to the bottom of the top plate, the screw motor is fixedly installed on the outside of the bench body, and the screw shaft of the screw motor is matched with the threaded holes of the two sliders.

[0010] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, the rotary-push mechanism includes a motor, a driving gear, a threaded rod and a driven gear. The motor is fixedly installed on the inner side of the interlayer compartment, the driving gear is fixedly connected to the output shaft of the motor, another threaded hole is opened at the bottom of the slide plate, the threaded rod is matched with the threaded holes of the two slide plates, the driven gear is fixedly installed in the middle of the threaded rod, and the driving gear is meshed with the driven gear.

[0011] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, a counting gear is fixedly installed at one end of the bottom roller close to the interlayer compartment, and the counting gear is rotatably installed in the interlayer compartment. Two circle counters are fixedly installed on both sides of the interlayer compartment, and the input shaft of the circle counter is connected to the corresponding counting gear through a sprocket.

[0012] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, a water pump is installed inside the water tank, and the water outlet end of the water pump is connected to the nozzle.

[0013] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, anti-slip stripes are provided on the surfaces of the bottom roller and the side rollers.

[0014] According to the automobile driving condition test bench structure of at least one embodiment of the present disclosure, the position sensor is an infrared proximity switch.

[0015] Technical effects and advantages of the present invention:

[0016] The four tires of the car are in contact with the four bottom rollers respectively. When the car is started and the accelerator is pressed, the tires will drive the bottom rollers to rotate. The rotation speed of the bottom rollers can be measured by the lap counter. By comparing the data with the speed of the car, the speed difference between each wheel of the car and the corresponding bottom roller during driving can be obtained, thereby improving the detection accuracy.

[0017] The scope of the test can be increased. By starting the push mechanism, the push mechanism will drive the top plate to rise. During the rotation of the tire, the top plate will play a bumpy role. Then the position sensor can measure the position change of the vehicle suspension or chassis, thereby measuring the data of the vehicle suspension system;

[0018] By spraying water onto the bottom roller through the nozzle, the car tire will drive the bottom roller to rotate. The rotation speed of the bottom roller can be measured by the circle counter. By comparing the data with the car speed, the differential speed between the tire and the bottom roller under the influence of rain can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0020] Figure 1 It is a stereoscopic diagram of a vehicle driving condition test bench structure of the present invention.

[0021] Figure 2 It is a cross-sectional view of a vehicle driving condition test bench structure of the present invention.

[0022] Figure 3 It is a cross-sectional view of a vehicle driving condition test bench structure of the present invention in another direction.

[0023] Figure 4 It is an internal structure diagram of a vehicle driving condition test bench structure of the present invention.

[0024] Figure 5 yes Figure 4 A schematic diagram of the enlarged structure in the middle.

[0025] Figure 6 It is a structural diagram of the push mechanism in the present invention.

[0026] The specific reference numerals in the figure are:

[0027] 1. Test stand body; 11. Interlayer compartment; 12. Test cavity; 13. Receiving port; 2. Bottom roller; 21. Counting gear; 3. Side roller; 4. Top plate; 5. Push mechanism; 51. Guide rail; 52. Slider; 53. Screw motor; 54. Pull rod; 6. Water tank; 61. Nozzle; 7. Position sensor; 8. Rotary push mechanism; 81. Motor; 82. Driving gear; 83. Threaded rod; 84. Driven gear; 9. Turn counter; 91. Sprocket. DETAILED DESCRIPTION

[0028] For descriptive purposes, the present disclosure may use spatially relative terms such as "under," "beneath," "under," "above," "on," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, components described as "under" or "beneath" other components or features would then be positioned "above" the other components or features. Thus, the exemplary term "under" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0029] like Figure 1-5 As shown, a vehicle driving condition test bench structure disclosed in the present invention comprises a bench body 1, a sandwich compartment 11 is fixedly installed in the middle of the bench body 1, a test cavity 12 is formed inside the bench body 1 at both sides of the sandwich compartment 11, bottom rollers 2 are rotatably installed at both ends of the test cavity 12, the bottom rollers 2 are hollow structures, and are used to support automobile tires, side rollers 3 are rotatably installed at both sides of the bottom rollers 2 above the test cavity 12, and when the automobile tires are located on the bottom rollers 2, the two side rollers 3 can clamp the two sides of the automobile to ensure that the automobile wheels can rotate smoothly;

[0030] The bottom roller 2 has a transverse slot opened along the length direction, a top plate 4 is arranged in the transverse slot, and a push mechanism 5 is arranged inside the bottom roller 2, and the push mechanism 5 is used to control the top plate 4 to rise and fall in the transverse slot, so as to simulate the bumpy road condition;

[0031] A water tank 6 is installed at the bottom of the test chamber 12 between the two bottom rollers 2, and nozzles 61 are installed at both ends of the upper part of the water tank 6 toward the bottom rollers 2 at the corresponding positions, so as to realize the road conditions of the car driving in rainy weather;

[0032] The interlayer bin 11 has receiving openings 13 on both sides above the bottom rollers 2, a slide plate is slidably installed in the receiving openings 13, a position sensor 7 is fixedly installed on the upper part of the slide plate, and a rotary push mechanism 8 is provided inside the interlayer bin 11 at the position of the position sensor 7, and the rotary push mechanism 8 is used to control the sliding of the two slide plates in relative positions.

[0033] like Figure 6As shown, in this embodiment, the pushing mechanism 5 includes a guide rail 51 and a screw motor 53, the guide rail 51 is fixedly installed at the internal axis position of the bottom roller 2, the guide rail 51 is arranged along the length direction of the bottom roller 2, two sliders 52 are slidably installed on the guide rail 51, a threaded hole is opened in the middle of the slider 52, and a pull rod 54 is movably hinged at the upper end of the slider 52, and the upper end of the pull rod 54 is movably hinged to the bottom of the top plate 4, and the screw motor 53 is fixedly installed on the outside of the stand body 1, and the screw shaft of the screw motor 53 is connected with the threaded holes of the two sliders 52, wherein the screw shaft is respectively provided with threaded surfaces in opposite directions from the middle to the two ends, and the two sliders 52 can be moved closer or farther away from each other by cooperating with the threaded holes of the sliders 52 through the different threaded surfaces.

[0034] In this embodiment, the rotary push mechanism 8 includes a motor 81, a driving gear 82, a threaded rod 83 and a driven gear 84. The motor 81 is fixedly installed on the inner side of the interlayer compartment 11, and the driving gear 82 is fixedly connected to the output shaft of the motor 81. Another threaded hole is opened at the bottom of the slide plate, and the threaded rod 83 is matched with the threaded holes of the two slide plates. The driven gear 84 is fixedly installed in the middle of the threaded rod 83, and the driving gear 82 is meshed with the driven gear 84.

[0035] In this embodiment, a counting gear 21 is fixedly installed at one end of the bottom roller 2 close to the interlayer compartment 11, and the counting gear 21 is rotatably installed in the interlayer compartment 11. Two circle counters 9 are fixedly installed on both sides of the interlayer compartment 11. The input shaft of the circle counter 9 is connected to the corresponding counting gear 21 through a sprocket 91. The rotation speed of the bottom roller 2 can be measured by the circle counter 9. By comparing the data with the vehicle speed, the differential speed between the tire and the bottom roller 2 can be obtained.

[0036] In this embodiment, a water pump is installed inside the water tank 6 , and a water outlet of the water pump is connected to the nozzle 61 .

[0037] Furthermore, in this embodiment, anti-slip stripes are provided on the surfaces of the bottom roller 2 and the side rollers 3.

[0038] In this embodiment, the position sensor 7 is an infrared proximity switch, which can detect the distance change of the object being measured by emitting infrared rays and then receiving the reflection of the infrared rays.

[0039] The specific operation steps in actual application are as follows: move the car onto the platform body 1, so that the four tires of the car are in contact with the four bottom rollers 2 respectively, then start the car and step on the accelerator, the car tires will drive the bottom rollers 2 to rotate, and the rotation speed of the bottom rollers 2 can be measured by the lap counter 9, and the data is compared with the car speed to obtain the differential speed between the tires and the bottom rollers 2;

[0040] By starting the push mechanism 5, the push mechanism 5 will drive the top plate 4 to rise. During the rotation of the tire, the top plate 4 will play a bumpy role. Then, the position sensor 7 can measure the position change of the automobile suspension or chassis, thereby measuring the data of the automobile suspension system;

[0041] By spraying water onto the bottom roller 2 through the nozzle 61, the car tire will drive the bottom roller 2 to rotate. The rotation speed of the bottom roller 2 can be measured by the circle counter 9. By comparing the data with the car rotation speed, the differential speed between the tire and the bottom roller 2 under the influence of rain can be obtained.

[0042] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments / methods or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. For those skilled in the art, other changes or modifications may be made based on the above disclosure, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A vehicle driving condition test bench structure, comprising a bench body, a sandwich compartment fixedly installed in the middle of the bench body, and test cavities formed on both sides of the sandwich compartment inside the bench body, characterized in that: Bottom rollers are rotatably installed at both ends of the test chamber, and side rollers are rotatably installed above both sides of the bottom rollers in the test chamber; The bottom roller surface is provided with a transverse slot along the length direction, a top plate is provided in the transverse slot, and a push mechanism is provided inside the bottom roller, and the push mechanism is used to control the lifting and lowering of the top plate in the transverse slot; A water tank is installed at the bottom of the test chamber between the two bottom rollers, and nozzles facing the bottom rollers at corresponding positions are installed at both ends of the upper part of the water tank; The sandwich bin is provided with receiving openings on both sides above the bottom rollers, in which slide plates are slidably installed, and a position sensor is fixedly installed on the upper part of the slide plate. A rotary push mechanism is provided inside the sandwich bin at the position of the position sensor, and the rotary push mechanism is used to control the sliding of two slide plates in relative positions.

2. The vehicle driving condition test bench structure according to claim 1 is characterized in that: The pushing mechanism includes a guide rail and a screw motor. The guide rail is fixedly installed at the internal axis position of the bottom roller and is arranged along the length direction of the bottom roller. Two sliders are slidably installed on the guide rail. A threaded hole is opened in the middle of the slider. A pull rod is movably hinged at the upper end of the slider. The upper end of the pull rod is movably hinged to the bottom of the top plate. The screw motor is fixedly installed on the outside of the stand body, and the screw shaft of the screw motor is matched with the threaded holes of the two sliders.

3. The vehicle driving condition test bench structure according to claim 1 is characterized in that: The rotary push mechanism includes a motor, a driving gear, a threaded rod and a driven gear. The motor is fixedly installed on the inner side of the interlayer compartment, the driving gear is fixedly connected to the output shaft of the motor, another threaded hole is opened at the bottom of the slide plate, the threaded rod is matched with the threaded holes of the two slide plates, the driven gear is fixedly installed in the middle of the threaded rod, and the driving gear is meshed with the driven gear.

4. The vehicle driving condition test bench structure according to claim 1 is characterized in that: A counting gear is fixedly installed at one end of the bottom roller close to the interlayer bin, and the counting gear is rotatably installed in the interlayer bin. Two circle counters are fixedly installed on both sides of the interlayer bin, and the input shaft of the circle counter is connected to the corresponding counting gear through a sprocket.

5. The vehicle driving condition test bench structure according to claim 1 is characterized in that: A water pump is installed inside the water tank, and a water outlet end of the water pump is communicated with the spray head.

6. The vehicle driving condition test bench structure according to claim 1 is characterized in that: The surfaces of the bottom supporting roller and the side supporting rollers are both provided with anti-skid stripes.

7. The vehicle driving condition test bench structure according to claim 1 is characterized in that: The position sensor is an infrared proximity switch.

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