Electronically controlled shock absorber

FIELD: machine building.

SUBSTANCE: electronically controlled shock absorber comprises a pack of that act as elastic elements, and means for attaching them to parts of the object. The plates are divided into two groups having one or more plates, each of them is attached to an object with only one edge. The plates have a clamping device that provides a specified necessary stiffness, depending on the load of the vehicle, and one of the specified characteristics of depreciation, whose work is controlled by the processor. The input of the processor receives signals from the sensors that control the parameters of the shock absorber's work.

EFFECT: enhanced functionality and improved reliability of the shock absorber of the vehicle.

4 cl, 1 dwg

 

The invention relates to the field of engineering that applies the damping of mechanical vibrations, in particular intended for use in suspensions of vehicles.

Known spring containing the plate pack, use for damping the force of friction between their contacting surfaces. It is simple in execution, dissipates heat well, can have one good damping characteristics, but is bulky and has a lot of weight.

Known actuators of brake systems of modern vehicles containing attached to a stationary part of the object (suspension of body) brake pads, which are at the right point in time under the action of the actuator, having a variety of designs, pressed to a special metal surfaces of the movable part of the object (part of the suspension, rigidly connected with the wheel), creating a resistance of its bilateral directed movement (braking) up to a complete stop. This can be compared with the damping of mechanical vibrations of low frequency.

The closest technical solution to the claimed invention is a telescopic supporting pneumoactuator Gorbulin containing the device that creates resistance to movement of the elements, one of which is attached to one side of the object, and the other to the other side,the control device is in the form of an electronic switch, monitors all arriving at its input the signals from the sensors and controls the operation of the actuator. RU # 2136985, CL F16F 9/04, 1999

The present invention is to provide a reliable contact of the wheels of a vehicle with the road surface, the presence of a single absorber package damping characteristics to choose from, the regulation of the stiffness of the leaf springs when turning and changing the weight of the load.

This problem is solved in electronically adjustable spring damper (ARRA)containing two groups consisting of one or more plates attached to different parts of the object. The group supplied with the clamping device, which, depending on the value of cargo change the spring rates and a variable resistance force of their mutual movement in every single moment of this magnitude, which at this point in time meets the requirement specified damping properties due to the fact that the amount of force resistance is managed.

The operation of the clamping device by means of the actuator, which may be electrical, mechanical, hydraulic, pneumatic and other, controlled by the processor, the input device which the signals from sensors that continuously monitor the change of parameters for controlling the operation of ARRA. Processor support is otherwise specified by the driver spring rates depending on the load the vehicle and road conditions and damping characteristics ARRA depending on the speed of the vehicle. You can use one processor for controlling operation of multiple absorbers, which can be installed as back and front of the vehicle.

And that to improve the inhibitory properties of the construction plate have the brake pads or brake pads between them, which in turn extends the service life of the plates.

And the fact that the plates are arranged vertically or at an angle to the horizon, while one group is attached to a fixed part of the object and the other movable. In this case, vertical or inclined ARRA may be placed instead of the rear hydraulic shock absorber inside the rack, completely replacing its functions. Moreover, it is not necessary that the plates were elastic.

And also the fact that to be able to use ARRA in front columns between the plates, and fastening means mounted bearings, allowing ARRA to rotate around its axis independently of the parts of the object.

And the fact that era with vertical and inclined position role plates can be performed by other structural elements, provided with friction surfaces which, in the required time, have the opportunity to Nestle between them with the required strength.

The figure schematically shows a General view ARRA mounted on the fixed portion of the lens is. He is a horizontally disposed bearing design, typically used in rear suspensions of the vehicle.

ARRA contains elastic plates 1, 2 with the guide elements 3, 4 and means of attachment to a fixed part of the object 5, 6 and the movable part of the object 7. Plates 1, 2 are supplied with the clamping device 8, 9, bringing them together with the necessary power, which provides the required friction between them. Between the plates can be the brake pads or linings 10.

The drive of the clamping device, the processor, the sensors not shown in the figure.

ARRA works as follows.

The basis of operation control ARRA laid division control signals for the variable and constant components. Constant component adjusts the stiffness of the springs depending on the value of cargo: the higher the value of the cargo, the more force plates 1, 2 are approaching each other, the clamping device 8, the stiffer the spring. In the rest mode to unloaded vehicle relative positions of the plates 1, 2 relative to each other is taken as a reference. This arrangement of the plates 1, 2 corresponds to the reference value of the DC component of the Executive signal clamping device 8, 9. The magnitude of the reference value of the Executive smoothly signal Il is discrete can be changed by the driver if desired, to increase or decrease, within certain limits, the stiffness of the springs. And selected by the driver the location of the plates 1, 2 is automatically maintained regardless of transported cargo by regulating stiffness era by changing the DC component of the signal that controls the operation of the clamping device 8, 9. When this plate 1, take 2 working position when in operation ARRA (for example, during loading and unloading) and at the beginning of the movement of the vehicle when first encountered vibrations of parts of the object. In the program of the processor provides increased rigidity ARRA, loaded when cornering, by increasing the constant part of their Executive signal to the value, which excludes any roll of the vehicle. The value of the constant component can be selected by the driver when driving on roads with different road surface

The variable component has a positive and negative polarity relative to the fixed component and is intended for damping mechanical oscillations of the movable part of the object. During the compression processor and his team in the clamping device 8, 9 signal with a negative polarity reduces the DC component of the control signal, reducing the stiffness of the springs and thereby the deflection of the fixed part of the object from the impact on her mobile. At the course end processor processed signal is Aly from sensors it defines a specific point in time ARRA the optimal value of the efforts of the resistance of the return movement of the movable part of the object and outputs according to the desired damping characteristics of the command signal corresponding to the magnitude and polarity of the clamping device 8, 9, which accordingly adjusts the magnitude of friction between the plates 1, 2, thereby providing a reliable contact of the wheels of the vehicle from the road surface. The processor can have multiple damping characteristics, designed for driving in different road conditions and at different speeds, one of which is selected by the driver.

As the rear shock absorbers vehicle ARRA can operate in vertical or inclined position when the fastening means 5 to be installed on the fixed part of the object, and the tool attachment 6 - a on mobile or Vice versa. Possible joint use of two ARRA in an inclined position, if one edge is mounted on a fixed part of the object, and the other two are on mobile. In this case, the fastening means 7 is missing.

If between the fastening means 5, 6 and plates 1, 2 guides 3, 4 to install the bearings so that the plates 1, 2 are placed on them clamping devices 8, 9 can freely rotate around its axis regardless of the parts of the object, ERRA with the vertical arrangement is receiving can be used in front columns of the suspension of the vehicle. In the case of vertical arrangement ARRA only works as a shock absorber in case of failure of the suspension spring rack can serve as a support, allowing the vehicle to independently drive to the repair or Parking. When this clamping device 8, 9 is fed by the Executive signal in the form of a constant component of such magnitude, to prevent movement of the plate 1 relative to the plate 2.

In ARRA designed to work in vertical and inclined positions, instead of the plates 1, 2 can be used for other structural elements, provided with friction surfaces, in which each time have the opportunity to touch each other with the desired friction force.

1. Electronically-adjustable spring damper (ARRA), containing held the guide elements of the plate pack, the role of elastic elements, and means for fastening them to the parts of the object, characterized in that the plate is divided into two groups containing from one plate and more, each of which is attached to the object by only one edge, with clamping device, providing one of the specified necessary rigidity depending on the magnitude of the load of the vehicle and a preset cushioning characteristics, which is controlled by the CPU, the input of which receives signals from d is tchikov, controlling the operating parameters of the shock absorber.

2. The shock absorber according to claim 1, characterized in that it contains the brake pads or gaskets between the plates.

3. The shock absorber according to any one of claims 1 and 2, characterized in that the groups of plates are arranged vertically or at an angle to the horizon, one of which is fixed to the stationary and the other movable parts of the object.

4. The shock absorber according to claim 3, characterized in that between the means of the fasteners and plates are mounted bearings that allow ERRA be rotated about its axis independently of the parts of the object.



 

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