CN210364101U - Semi-active damping adjustable cab suspension system - Google Patents

Abstract

The utility model discloses an adjustable driver's cabin suspension system of semi-active damping, including ECU, battery, acceleration sensor, ignition switch, rotary switch, car CAN information, driver's cabin suspension air spring, gas control valve, air supply, gas holder, electric wire and trachea, driver's cabin suspension air spring is provided with integrated variable damping shock absorber, and ECU passes through the electric wire to be connected with gas control valve, acceleration sensor, integrated variable damping shock absorber, car CAN information, rotary switch, battery respectively, gas holder, air supply pass through the trachea with the gas control valve and are connected. The utility model can realize continuous damping adjustment, effectively improve the running smoothness and the operation stability, and bring better riding comfort to users; the air source is inflated or exhausted through the air control valve, air springs in the cab suspension are inflated and deflated, the cab suspension is kept at a set height, good comfort is kept when the vehicle runs on various roads, and dangers are avoided when the vehicle runs.

Description

Semi-active damping adjustable cab suspension system

Technical Field

The utility model belongs to the technical field of the automotive suspension, especially, relate to an adjustable driver's cabin suspension system of semi-active damping.

Background

With the development and progress of the automobile industry, the comfort requirement of a user on a cab is higher and higher. In the design of the cab suspension, the main indexes are smoothness, safety and fatigue endurance characteristics, wherein the smoothness of the cab suspension is self-evident in the importance of the dynamics of the cab suspension.

Traditional driver's cabin suspension system is passive form system, and to the continuous dynamic behavior in semi-active suspension control process, this driver's cabin suspension system damping is unadjustable, can't adapt to on a large scale speed of a motor vehicle and road conditions change, and the vibration isolation effect on the road surface of jolting is relatively poor, and the riding comfort of vehicle is relatively poor, and control stability is relatively poor. In addition, the suspension system is considered to run on various road surfaces, so the height is not too low, the distance from the ground is relatively fixed, the center of gravity is high when running at high speed due to small changes in the height of the chassis and the horizontal relative ratio when running at high speed, the comfort is poor, and danger may be caused, so that improvement is necessary.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the not enough of above-mentioned prior art existence, provide an adjustable driver's cabin suspension system of semi-active damping, it has that continuous damping is adjustable, improve the ride comfort that the car went, the riding comfort is better, control stability is better and let the driver's cabin suspension keep setting for the characteristics of optimum height.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an adjustable driver's cabin suspension system of semi-active damping which characterized in that: the air storage tank, the air source and the air control valve are connected through the air pipe, and the cab suspension air spring is adjusted and kept at a set height through the air control valve.

Preferably, the signals sent by the ECU receiving the CAN information of the main vehicle are steering wheel turning angle, brake pedal, accelerator pedal, vehicle speed and ignition signals respectively.

Preferably, the ECU automatically switches different control modes according to the CAN information of the main vehicle, and adjusts the integrated variable damping shock absorber and the cab suspension air spring according to the different control modes.

Preferably, the acceleration sensor collects acceleration values in real time and sends the acceleration values to the ECU for processing, and according to a signal of the vehicle body acceleration sensor, calculation and analysis are carried out according to a control algorithm, and real-time switching of high and low duty ratios is carried out.

Preferably, the rotary switch receives a control mode of the user vehicle, and the control mode of the user vehicle includes a soft mode, a hard mode, and a standard mode.

Preferably, the rotary switch can realize mode switching, the rotary switch is provided with an indicator light and a fault light, the indicator light is used for displaying a mode state, when the system has a fault, the system runs in a hard mode state, and the fault light is in a flashing warning state.

Preferably, the cab suspension air spring is an air spring with an integrated CDC damper inside.

Preferably, the cab suspension air spring is an air spring externally provided with an integrated CDC shock absorber.

After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the utility model has the advantages of simple and reasonable structure, this system sets up integrated variable damping shock absorber through driver's cabin suspension air spring, can accomplish that continuous damping is adjustable, by ECU intelligent control, the ride comfort and the operating stability of the automobile of effectual improvement going bring better riding comfort for the user to can obviously improve the performance of vehicle system; the air source is inflated or exhausted through the air control valve, air springs in the cab suspension are inflated and deflated, the cab suspension is kept at a set height, good comfort is kept when the vehicle runs on various roads, and dangers are avoided when the vehicle runs.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

in the figure: 10. an ECU; 11. a storage battery; 12. an acceleration sensor; 13. an ignition switch; 14. a rotary switch; 15. master vehicle CAN information; 16. the cab suspends an air spring; 17. a gas control valve; 18. a gas source; 19. an air storage tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a semi-active damping adjustable cab suspension system comprises an ECU10, astorage battery 11, anacceleration sensor 12, anignition switch 13, arotary switch 14, mainvehicle CAN information 15, a cabsuspension air spring 16, agas control valve 17, agas source 18, agas storage tank 19, electric wires and gas pipes, wherein the cabsuspension air spring 16 is provided with an integrated variable damping shock absorber, the cabsuspension air spring 16 is an air spring integrated with a magnetorheological shock absorber, the ECU10 is respectively connected with thegas control valve 17, theacceleration sensor 12, the integrated variable damping shock absorber, the mainvehicle CAN information 15, therotary switch 14 and thestorage battery 11 through electric wires, thegas storage tank 19, thegas source 18 and thegas control valve 17 are connected through the gas pipes, and the cabsuspension air spring 16 is adjusted and kept at a set height through thegas control valve 17.

In the embodiment, the system is simple and reasonable, the integrated variable damping shock absorber is arranged through the cabsuspension air spring 16, continuous damping can be adjusted, the ECU can be used for intelligently controlling, the running smoothness and the operation stability of the automobile are effectively improved, better riding comfort is brought to a user, and the performance of the vehicle system can be obviously improved; theair source 18 is inflated or exhausted through theair control valve 17 to inflate and deflate the cabsuspension air spring 16, so that the cab suspension is kept at a set height, good comfort is kept when the vehicle runs on various roads, and dangers are avoided when the vehicle runs.

Specifically, the number of theacceleration sensors 12 is three, and the number of the cabsuspension air springs 16 is four, and the acceleration sensors are respectively located at the front left position, the front right position, the rear left position and the rear right position of the cab suspension. The mounting location of the integrated variable damping shock absorber is the conventional shock absorber mounting location on an air suspension system.

Further, the signals sent by the ECU10 receiving thehost CAN message 15 are steering wheel turning angle, brake pedal, accelerator pedal, vehicle speed and ignition signal, respectively.

In the present embodiment, the steering wheel angle, the brake pedal, the accelerator pedal, the vehicle speed, and the ignition signal are signal inputs, and are received and processed by the ECU10 in accordance with the signal inputs.

Further, the ECU10 automatically switches different control modes according to thehost CAN information 15, and adjusts the integrated variable damping shock absorber and the cabsuspension air spring 16 according to the different control modes.

In the embodiment, the adjustment of the integrated variable damping shock absorber is easy to realize, the factors such as the vehicle speed, the road surface and the duration are considered, different running conditions of the vehicle can be met, theair spring 16 for suspending the cab is subjected to inflation or exhaust adjustment through theair control valve 17, the suspension of the cab is kept at a set height, the vehicle runs on various road surfaces, good comfort is kept, and dangers are avoided during running.

Further, theacceleration sensor 12 collects acceleration values in real time and sends the acceleration values to the ECU10 for processing, and according to signals of the vehiclebody acceleration sensor 12, calculation and analysis are carried out according to a control algorithm, and real-time switching of high and low duty ratios is carried out.

In this embodiment, theacceleration sensor 12 is specifically a piezoresistive acceleration sensor, and the use effect is good.

Further, therotary switch 14 receives a control mode of the user vehicle, which includes a soft mode, a hard mode, and a standard mode.

In the embodiment, three modes are switched, wherein the steering wheel angle is greater than 180 degrees, the duty ratio is switched to the hard mode state, the steering wheel angle is less than 180 degrees, and the duty ratio is recovered to the soft mode state; the position of an accelerator pedal (the threshold value is more than 50 percent), the duty ratio is switched to a hard mode state, the position of the accelerator pedal (the threshold value is more than 50 percent), and the duty ratio is recovered to a soft mode state; the brake pedal is ON, the duty ratio is switched to the hard mode state, the brake pedal is OFF, and the duty ratio is recovered to the soft mode state; the vehicle speed is less than 5km/h, the vehicle speed is static, the duty ratio is in a hard mode state, the vehicle speed is more than 5km/h and less than 60km/h, the duty ratio is in a soft mode state, the vehicle speed is more than 60km/h, and the duty ratio is switched to the hard mode state.

Further, therotary switch 14 can realize the mode switching, therotary switch 14 is provided with an indicator light and a fault light, the indicator light is used for displaying the mode state, when the system has a fault, the system runs in a hard mode state, and the fault light is in a flashing warning state.

In this embodiment, the pilot lamp can showrotary switch 14's mode switch well, has fine intuitiveness, and through the trouble lamp, the suggestion trouble problem that can be timely has fine later maintenance nature.

Further, the cabsuspension air spring 16 is an air spring with an integrated CDC damper built therein.

In the embodiment, the air spring with the built-in integrated CDC shock absorber is preferably adopted, the structure is simple, and the same using effect can be achieved.

Further, the cabsuspension air spring 16 is an air spring externally provided with an integrated CDC damper.

In the embodiment, the air spring with the built-in integrated CDC shock absorber is preferably adopted, the structure is simple, and the same using effect can be achieved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides an adjustable driver's cabin suspension system of semi-active damping which characterized in that: the air storage tank, the air source and the air control valve are connected through the air pipe, and the cab suspension air spring is adjusted and kept at a set height through the air control valve.

2. The semi-active damping adjustable cab suspension system of claim 1, wherein: the signals sent by the ECU receiving the CAN information of the main vehicle are steering wheel turning angle, brake pedal, accelerator pedal, vehicle speed and ignition signals respectively.

3. The semi-active damping adjustable cab suspension system of claim 2, wherein: the ECU automatically switches different control modes according to CAN information of the main vehicle, and adjusts the integrated variable damping shock absorber and the cab suspension air spring according to the different control modes.

4. A semi-active damping adjustable cab suspension system according to claim 3, wherein: the acceleration sensor collects acceleration values in real time and sends the acceleration values to the ECU for processing, calculation and analysis are carried out according to a control algorithm according to signals of the acceleration sensor of the automobile body, and real-time switching of high duty ratio and low duty ratio is carried out.

5. The semi-active damping adjustable cab suspension system of claim 1, wherein: the rotary switch receives a control mode of a user vehicle, which includes a soft mode, a hard mode, and a standard mode.

6. The semi-active damping adjustable cab suspension system of claim 5, wherein: the rotary switch can realize mode switching, the rotary switch is provided with an indicator light and a fault light, the indicator light is used for displaying a mode state, when the system breaks down, the system runs in a hard mode state, and the fault light is in a flashing warning state.

7. The semi-active damping adjustable cab suspension system of claim 1, wherein: the cab suspension air spring is an air spring with a built-in integrated CDC shock absorber.

8. The semi-active damping adjustable cab suspension system of claim 1, wherein: the suspension air spring of the cab is an air spring of an external integrated CDC shock absorber.

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