Device to prevent vehicle overturning

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, particularly, to appliances reducing probability of vehicle overturning in crosswise plane. Proposed device comprises storage battery, flexible transducer of vehicle angular position with pendulum and resistance bridge circuit of angular position conversion in electric signal, gas generator pyrocartridge with air cylinder and bridge circuit. Transducer of vehicle angular position comprises two differentially interconnected coil springs. Said pendulum is connected with resistor slide that features variable resistance. Outputs of bridge circuit measuring diagonal are connected to comparator inputs. Comparator output is connected to contactor. Contactor contacts connect storage battery to gas generator pyrocartridge with air cylinder. Air cylinder comprises piston con rod with end spring-loaded retainers and stop.

EFFECT: higher passive safety.

4 dwg

 

The invention relates to the transport industry, in particular to systems that provide passive safety of passengers during rollover in the transverse plane of the vehicle (e.g., buses), due to the automatic actuation antiproteinases node.

A known system of automatic stabilization of the vehicle (e.g. tractor), which is designed to maintain the vertical position of the skeleton of the vehicle. The stabilization system includes: a stabilizer pendulum, Executive cylinders with check valves, faucet off of the stabilization system, the flow divider and control devices. The units of the stabilization system are placed in different areas of transport and interconnected metal pipes and hoses (Xenetic I.P. and other Tractor MT3-80, its modifications, M., Agromisa, 1991, s-268).

The disadvantages of the system of automatic stabilization include: significant weight it is about 15 kg, the complexity of technical service associated with the bulkiness and extra cylinders, oil piping, valve and other parts, each transport requires its own set of elements.

It is known and the other device (ed. St. SU 816849, CL B62D 49/08), in which for excluding the treatment of overturning of the vehicle (for example, wheeled tractor) contains a sensor of angular position filled with electrically conductive fluid (e.g., mercury), the U-shaped tube with side electrodes connected to a power source (e.g. generator), the source of the sound and light signal. In addition, the device has an intermediate relay, electromagnetic Executive power elements solenoids, cores are mechanically connected with the pedals clutch and brake by means of two shoulders of the levers. In the control circuit relay is installed the switch.

This device is not without flaws. The device used harmful substance - mercury; significant weight, exceeding 6 kg; a large number of used electrical appliances (for example, relays and the like); reduced functionality due to the fact that this device works only in the longitudinal or in the transverse planes; each transport requires their devices and structural elements.

Closest to the proposed technical solution is the automatic alarm about the deviation from the vertical position of the skeleton of a vehicle (Veh. St. SU 1742119, CL B62D 49/08, 1992).

When the maximum value of the deviation device prototype forces the disabling of the ignition system of the engine and the stop of the vehicle, as well as alerting the driver of the sound and light signals about the danger of overturning of the vehicle. To do this on the vehicle by means of a spherical joint has the pendulum, when the tilt of the vehicle, the pendulum moves in a corresponding plane and in contact with one of the elements, which opens normally closed contacts and closes the normally open. The contacts are connected in parallel and sequentially connect the power source with the device light and sound signals installed on the vehicle. This eliminates the occurrence of injuries and accidents or other consequences when you bend the vehicle overturning.

A disadvantage of the known device prototype is the lack of nodes, preventing the overturning of the vehicle, the use of a large number of electrical contacts. This is the unreliability of his work and limited functionality.

The technical result that can be obtained by carrying out the present invention is to expand the functionality by providing a vehicle unit forced operation antiproteinases site without the participation of water is El. This provides a passive passenger safety for overturning in the transverse plane of the vehicle (e.g., buses).

Figure 1 shows the block diagram of the device to prevent tipping of the vehicle. The device comprises: a sensor of angular position (roll) of the body 1, a control unit (cu) 2, the actuator of the gas generator (PG) 3, the pneumatic cylinder (HRC) 4, push rod (PCs) 5, emphasis (UE)6.

The work of the proposed device to prevent tipping of the vehicle is as follows (figure 2). On the roof of the body of the vehicle 11 (e.g., bus), set antiproteinase the node associated with the sensor of angular position relative to the longitudinal axis (roll) body control unit. The sensor is a transducer angular position of the vehicle and contains two differentially connected coil springs, the axis of which is fixed the upper end of the pendulum, its lower end is connected to the slider of the resistor with variable resistance of one of the shoulders of a resistive bridge circuit, the conclusions of the measuring diagonal of the bridge circuit are connected to the inputs of the control unit, consisting of a comparator, contactor and battery. The output of the comparator is connected to the contactor, the contacts connecting ucaut the battery to the actuator with the gas generator, connected to the pneumatic cylinder. The tilting of the vehicle body by an angle exceeding a critical value, the control unit connects with the power source, the actuator of the gas generator mounted on antiproteinase site. The actuator is activated to ignite the incendiary cannon charge, which ignites eject the charge generated gas enters the pneumatic cylinder and pushes the piston rod 5 is fixed on its end stop 6. The body of the vehicle continues to change its position relative to the longitudinal axis until it touches the stop with the supporting surface 12 of the wheels of the vehicle.

Figure 3 shows the scheme of installation antiproteinases node on the roof of the vehicle body. The body of the pneumatic cylinder is secured to the upper cross member Spahotel frame closest to the center of mass of vehicle in running condition. Antiproteinase site (figure 3) contains: pneumatic cylinder 4, the gas generator 3, the stop 6, installed on the roof of the vehicle body 7 (top view).

Figure 4. shown design antiproteinases node.

During operation of the vehicle (e.g. bus) the current value of the roll angle of the body is determined by the angular position sensor (roll). In that case, if the current value of the roll angle of the body becomes equal to or accepts the address on the small value of the critical angle of slope the control unit connect the power source to the actuator of the gas generator. The actuator 10 (figure 4) is activated, ignites the combustible material contained in the gas generator 3. The resulting gas is supplied to the pneumatic cylinder 4 acts on the piston 8 mounted on the rod 5, and pushes it along with fixed on the other end of the stop 6. When the piston reaches the end position, it is still fixed by means of spring clamps 9.

Lateral tilting passenger vehicles (e.g. buses), is the most traumatic form of traffic accident. When dumping the body of the vehicle is destroyed, and passengers are injured because of their impacts on the fixed elements of the body, loose equipment and Luggage placed in the passenger compartment.

At the greater speed of movement of passenger vehicles, unlike tractors, special requirements for reliability of the sensor of angular position (roll) and control unit.

In practice, there are many transducers and sensing elements with different physical nature (Handbook of means of automation. Ed. BE the Bottom and IV Antica. - M.: Energoatomizdat, 1983. 504 S.).

The proposed technical solution, one element of the sensor is and the angular position of the vehicle body, as in the device of the prototype used a pendulum with cargo. The upper end of the pendulum is connected with the sleeve, having an axis rigidly mounted to the vehicle body, so that the pendulum can oscillate in the transverse plane of the vehicle. The sleeve is fixed, the inner ends of the two flat differentially interconnected coil springs. The outer ends of the springs attached to the vehicle body (the Reference means of automation. Ed. BE the Bottom and IV Antica. - M.: Energoatomizdat, 1983. 504 C. Section 3, item 3.2., is. p.51).

Such design of the sensor of angular position of the vehicle in the transverse plane is not possible when driving on rough roads to freely oscillate to the critical values at which may arise false alarm control unit. Differential inclusion of two flat spiral springs eliminates the hysteresis phenomenon from permanent deformation of the springs.

In the control unit by the torque Converter of the sensor of angular position of the vehicle into an electrical signal used resistive bridge circuit. The resistor of one of the arms of the bridge circuit with the variable resistance has a sliding connection with the lower end of the pendulum. Conclusions measurement of the diagonal of m is stoway circuit connected to the inverting and reinvestible inputs of an electronic device that compares two voltages (signals) - the comparator (Reference means of automation. Ed. BE the Bottom and IV Antica. - M.: Energoatomizdat, 1983. 504 S. str, 167). The output of the comparator with matching polypredicative current amplifier connected to the coil of the Electromechanical relay. The relay contacts upon actuation to connect the power source to the cutter.

The proposed solution will provide the passive safety of the driver and passengers during rollover in the transverse plane of the vehicle.

Device to prevent tipping of the vehicle containing the constant current source is a battery, elastic transducer angular position of the vehicle with a pendulum and a resistive bridge circuit to convert the angular position of the vehicle into an electrical signal, the high power bridge circuit connected to the battery, antiproteinase node, the power element of which is the actuator of the gas generator with the cylinder, characterized in that the transducer angular position of the vehicle contains two differentially connected coil springs, the axis of which is fixed the upper end of the pendulum, its lower end is connected to the slider of the resistor with variable resistance of one of the shoulders resistive bridge and therefore the s, conclusions the measuring diagonal of the bridge circuit are connected to the inputs of the comparator, the comparator output is connected to the contactor, the contacts connect the battery to the actuator of the gas generator with a pneumatic cylinder having communication with the mechanical antiproteinase site that contains a piston that attaches the rod end spring latches and stops.



 

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