CN114295269B - Shaft coupling type intelligent driving dynamometer - Google Patents

Abstract

A shaft-coupling intelligent driving dynamometer includes a left-right symmetrical shaft coupling dynamometer. The shaft coupling dynamometer cooperates with the inner track and the outer track through several rollers. A gear is arranged in the middle of the shaft coupling dynamometer. The gear and the Rack matching, compared with the existing chassis dynamometer, this invention adds annular rails such as inner rails and outer rails, and uses a servo motor to control the rotation angle of the shaft coupling dynamometer to realize the simulation of large-angle turning conditions of the vehicle being tested. , expands the field of chassis dynamometer testing, and can realize the simulation of both the straight road and the curved road of the vehicle under test.

Description

A shaft-coupled intelligent driving dynamometer

Technical field

The invention belongs to the technical field of automobile manufacturing, and in particular is a shaft-coupled intelligent driving dynamometer.

Background technique

With the development of the times, the requirements for automobile intelligence are getting higher and higher, and the development of existing test standards and test equipment lags behind the development of complete vehicles. At present, the development of intelligent driving mainly relies on model-in-the-loop testing and software-in-the-loop testing. Some developments have implemented hardware-in-the-loop testing of components such as cameras, controllers, and wire control systems.

There are three main types of vehicle testing: fully enclosed proving ground testing, semi-enclosed proving ground testing, and social road testing. Between the actual road test of the vehicle and the component-system hardware-in-the-loop test, there is a relatively blank vehicle bench test. Currently, there are existing vehicle-in-the-loop test benches, but they are all implemented using shaft coupling solutions. The current-axle coupled chassis dynamometer intelligently simulates vehicle longitudinal control conditions, but cannot simulate lateral control conditions.

In order to simultaneously simulate the lateral control conditions and longitudinal control conditions of the entire vehicle, an axis-coupled intelligent driving test chassis dynamometer is planned to be designed.

Contents of the invention

The present invention is to overcome the above-mentioned defects in the prior art and provide a shaft-coupled intelligent driving dynamometer.

In order to achieve the above objectives, the technical solution adopted by the present invention is: a shaft-coupled intelligent driving dynamometer, which includes a left-right symmetrical shaft coupling dynamometer. The shaft coupling dynamometer communicates with an inner track and an outer track through several rollers. The middle part of the shaft coupling dynamometer is equipped with gears, and the gears match the rack.

As a preferred solution of the present invention, the shaft coupling dynamometer includes a dynamometer body, a dynamometer cooling fan is arranged on the upper end of the dynamometer body, and a servo motor and a reducer are arranged on the side of the dynamometer body.

As a preferred solution of the present invention, the reducer is installed at the front end of the servo motor, and a gear is arranged at the lower end of the reducer, and the gear extends beyond the lower surface of the reducer.

As a preferred solution of the present invention, the shaft coupling dynamometer includes several rollers, two of which form a set.

As a preferred solution of the present invention, the roller is installed on the side of the shaft coupling dynamometer through a connecting piece, and the connecting piece is arranged at the front and rear ends of the dynamometer body.

As a preferred solution of the present invention, the connecting piece is arranged at an angle to the dynamometer body, and the angle is between 0° and 90°.

As a preferred solution of the present invention, the rack is located between the inner track and the outer track, and the distance between the rack and the inner track is consistent with the distance between the rack and the outer track.

As a preferred solution of the present invention, the inner track, outer track, and rack are in an inward arc-shaped structure, and the inner track, outer track, and rack are all fixed on the base.

As a preferred solution of the present invention, the side surfaces of the inner rail and the outer rail are convex.

As a preferred solution of the present invention, the roller is provided with a groove that matches the convex shape of the outer track.

The beneficial effects of the present invention are:

Compared with the existing chassis dynamometer, the present invention adds an inner track, an outer track and other annular tracks, and uses a servo motor to control the rotation angle of the shaft coupling dynamometer to realize the simulation of large-angle turning conditions of the vehicle under test and expand the chassis In the field of dynamometer testing, it can not only simulate the straight road of the vehicle under test, but also simulate the turning road of the vehicle under test.

Description of the drawings

Figure 1 is a schematic structural diagram of the present invention;

Figure 2 is a perspective view of the shaft coupling dynamometer of the present invention;

Figure 3 is a side view of the shaft coupling dynamometer of the present invention;

Reference numbers in the figure: shaft coupling dynamometer 1, rack 2, inner track 3, outer track 4, gear 11, dynamometer body 12, dynamometer cooling fan 13, servo motor 14, reducer 15, roller 16, connecting piece 17, groove 161.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in Figure 1-3, an axis-coupled intelligent driving dynamometer is used to test the intelligent driving vehicle bench with steering control. It includes a left-right symmetrical axis-coupled dynamometer 1, an axis-coupled dynamometer The machine 1 cooperates with the inner track 3 and the outer track 4 through several rollers 16. A gear 11 is arranged in the middle of the shaft coupling dynamometer 1, and the gear 11 cooperates with the rack 2. The present invention adds a set of gears to the existing shaft coupling chassis. The annular track, the shaft coupling dynamometer 1 is installed on the annular track, the shaft coupling dynamometer 1 rotates through the rack and pinion mechanism under the action of the power source, the shaft coupling dynamometer 1 rotates relative to the annular track, The vehicle lateral control conditions are simulated.

Specifically, the gear 11 on the shaft coupling dynamometer 1 cooperates with the rack 2. When the gear 11 rotates, the shaft coupling dynamometer 1 makes an arc motion on the inner track 3 and the outer track 4. The direction of the arc motion is It can be either clockwise or counterclockwise. Correspondingly, the inner track 3 and the outer track 4 play a load-bearing role for the stationary and moving shaft coupling dynamometer 1. When the shaft coupling dynamometer 1 moves in an arc, its center is The center of rotation of the steering knuckle of the vehicle under test coincides with the ground, which better simulates the lateral control conditions and longitudinal control conditions of the vehicle under test.

The shaft coupling dynamometer 1 includes a dynamometer body 12. The dynamometer body 12 plays a role in testing and also plays the role of carrying other parts installed on it. A dynamometer cooling device is arranged at the upper end of the tail of the dynamometer body 12. Fan 13, the higher setting of the dynamometer cooling fan 13 expands the range of its wind coverage. The dynamometer cooling fan 13 dissipates heat to the running dynamometer body 12, servo motor 14, and reducer 15.

A servo motor 14 and a reducer 15 are arranged on the side of the dynamometer body 12. The reducer 15 is installed at the front end of the servo motor 14. When the vehicle is running in a curve, it will generally slow down to prevent the vehicle from sliding off the running track. Therefore, the servo motor 14 The front-end reducer 15 is set up to simulate the transverse (curve) control conditions. The lower end of the reducer 15 is equipped with a gear 11. The lower end of the gear 11 exceeds the lower surface of the reducer 15 to avoid the structure of the reducer 15 from interfering with the rotation of the gear 11.

Specifically, when the vehicle under test turns, the servo motor 14 moves to drive the gear 11 to rotate. The gear 11 and the rack 2 cooperate to drive the dynamometer body 12 to move. Correspondingly, the front and rear ends of the dynamometer body 12 are moved through the rollers 16. The track 3 and the outer track 4 support and move on them. The servo motor 14 controls the deceleration of the gear 11 through the reducer 15, which can simulate the steering force and steering action of the vehicle under test at different speeds.

The connecting piece 17 is arranged at the front and rear ends of the dynamometer body 12, and the rollers 16 are installed on the side of the shaft coupling dynamometer 1 through the connecting piece 17. A set of rollers 16 are respectively provided at the front and rear ends of the shaft coupling dynamometer 1, and a set of rollers 16 is 2 to ensure the stability of the dynamometer body 12 when rotating, and the roller 16 can be slightly adjusted in the connecting piece 17.

The connecting piece 17 is arranged at an angle with the dynamometer body 12, and the angle is between 0° and 90°, which is consistent with the subsequent rotation of the dynamometer body 12.

The rack 2 is located between the inner rail 3 and the outer rail 4. The distance between the rack 2 and the inner rail 3 is consistent with the distance between the rack 2 and the outer rail 4, which facilitates the positioning and installation of the connector 17. Based on this, the diameter of the outer track 4 is larger than the diameter of the inner track 3. Correspondingly, the angle between the connector 17 located at the front end of the shaft coupling dynamometer 1 and the dynamometer body 12 is smaller than the connector located at the rear end of the shaft coupling dynamometer 1. 17 and the angle of the dynamometer body 12.

The inner track 3, the outer track 4, and the rack 2 are in an inward arc-shaped structure. The inner track 3, the outer track 4, and the rack 2 are all fixed on the base. The inner track 3, the outer track 4, and the rack 2 are stable. The fixation ensures the stable operation of the shaft coupling dynamometer 1 on the inner track 3, the outer track 4, and the rack 2.

The sides of the inner track 3 and the outer track 4 are convex, and the side of the rack 2 is also convex, but the top of the convex part is provided with teeth that match the gear 11, and the roller 16 is provided with the outer track 4. The groove 161 matches the convex shape, and the convex parts of the inner track 3 and the outer track 4 snap into the groove 161 to constrain the movement of the shaft coupling dynamometer 1 to the running track of the inner track 3 and the outer track 4. .

Specifically implement a shaft-coupled intelligent driving dynamometer:

As shown in Figure 1, determine the turning angle to be tested, and fix the rack 2 that meets this angle on the base. Correspondingly, lay out the inner track 3 and the outer track 4 at equal distances on both sides of the rack 2. The track 3 and the outer track 4 are both fixed on the base.

As shown in Figure 2-3, determine the position of the gear 11 that matches the rack 2 on the dynamometer body 12, determine the positions of the servo motor 14 and reducer 15 accordingly, and further pass through the inner track 3 and the outer track 4 Determine the position of the roller 16 and the connecting piece 17, and install the servo motor 14, reducer 15, and gear 11 on the dynamometer body 12 in sequence.

Next, install the two sets of connectors 17 and rollers 16 on the dynamometer body 12, and test the assembled dynamometer body 12 on the rack 2, inner track, and outer track 4. If not, If there is a problem, install the dynamometer cooling fan 13 above the dynamometer body 12. If there is a problem, adjust the installation positions of the gear 11, servo motor 14, reducer 15, roller 16, and connector 17.

When the gear 11, dynamometer cooling fan 13, servo motor 14, reducer 15, roller 16, and connector 17 are all accurately installed on the dynamometer body 12, a shaft coupling dynamometer 1 is formed.

At this time, turning on the servo motor 14 can simulate the large-angle turning condition of the vehicle under test.

The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be practiced in other embodiments without departing from the spirit or scope of the invention; accordingly , the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although this article uses the reference symbols in the figure more: shaft coupling dynamometer 1, rack 2, inner track 3, outer track 4, gear 11, dynamometer body 12, dynamometer cooling fan 13, servo motor 14. Terms such as reducer 15, roller 16, connector 17, groove 161, etc. do not exclude the possibility of using other terms; these terms are only used to more conveniently describe and explain the essence of the present invention; explain them Any additional restrictions are contrary to the spirit of the present invention.

Claims (10)

1. A shaft-coupled intelligent driving dynamometer, characterized by: including a left-right symmetrical shaft coupling dynamometer (1), the shaft coupling dynamometer (1) communicates with an inner track (3) through several rollers (16) ) and the outer track (4) cooperate. A gear (11) is arranged in the middle of the shaft coupling dynamometer (1). The gear (11) cooperates with the rack (5). The rack (5) is located in the inner track (3) and the outer track. Between the tracks (4), the inner track (3), the outer track (4), and the rack (5) have an inward arc-shaped structure. When the gear (11) rotates, the shaft coupling dynamometer (1) is realized in the inner track. (3), the outer track (4) moves in an arc shape, and when the shaft coupling dynamometer (1) moves in an arc shape, its center coincides with the rotation center of the steering knuckle of the vehicle being tested relative to the ground. 2. A shaft-coupled intelligent driving dynamometer according to claim 1, characterized in that: the shaft-coupled dynamometer (1) includes a dynamometer body (12), and the dynamometer body (12) The dynamometer cooling fan (13) is arranged on the upper end of the dynamometer body (12), and the servo motor (14) and reducer (15) are arranged on the side of the dynamometer body (12). 3. A shaft-coupled intelligent driving dynamometer according to claim 2, characterized in that: the reducer (15) is installed at the front end of the servo motor (14), and the lower end of the reducer (15) is arranged with Gear (11), the lower part of gear (11) exceeds the lower surface of reducer (15). 4. A shaft-coupled intelligent driving dynamometer according to claim 1, characterized in that: the shaft-coupled dynamometer (1) includes several rollers (16), two rollers (16) are one Group. 5. A shaft-coupled intelligent driving dynamometer according to claim 4, characterized in that: the roller (16) is installed on the side of the shaft-coupled dynamometer (1) through a connecting piece (17), and the connecting piece (17) is arranged at the front and rear ends of the dynamometer body (12). 6. A shaft-coupled intelligent driving dynamometer according to claim 5, characterized in that: the connecting piece (17) and the dynamometer body (12) are arranged at an angle, and the angle is between 0°- between 90°. 7. A shaft-coupled intelligent driving dynamometer according to claim 1, characterized in that: the distance between the rack (5) and the inner track (3) is the same as the distance between the rack (5) and the outer track (4). ) are the same distance. 8. A shaft-coupled intelligent driving dynamometer according to claim 7, characterized in that: the inner track (3), the outer track (4), and the rack (5) are all fixed on the base. 9. A shaft-coupled intelligent driving dynamometer according to claim 1, characterized in that: the side surfaces of the inner track (3) and the outer track (4) are convex. 10. A shaft-coupled intelligent driving dynamometer according to claim 9, characterized in that: the roller (16) is provided with a groove (16) that matches the convex shape of the outer track (4). 161).