SU951099A1 - Vehicle tube tyre burst simulator - Google Patents

Description

This invention relates to testing. m pneumatic vehicle tires and can be used when testing vehicles for safety.

Simulators of tire rupture of vehicle tires are known, containing a valve fixed on the wheel with a locking element, an actuator for opening the locking element and a device for remote control with water tl 3.

Such devices allow the operator to depressurize the tire and suddenly let the air out of it, simulating a tire break, when the vehicle is moving.

However, these devices are only suitable for tubeless tires.

Closest to the invention in its technical essence and the achieved result is a simulator for breaking the vehicle's tire tube, which is fixed to the camera and;

a valve freely mounted in the hole I-bar, a locking element, when the water opens the locking element and a device for remote control. The locking element of the known device is made in the form of a plug with a threaded rod, hooks, hooking with the valve body, and a bracket which embraces them. When the device triggers the stopper and other parts

..10 is separated from the valve and does not prevent it from being carried away into the interior of the tire by the action of a deforming chamber in this case. Such interaction details. It makes it possible to simulate the tearing of the G23 tire relatively accurately.

However, in some cases, the known device does not work reliably, as there are distortions in and: aeedani valve in the rim hole due to

Claims (2)

To the presence of threads and grooves that can cling to the edges of the hole. If the valve doesn’t go away after the air has been discharged into the tire and does not allow the side of the tire to leave the shelf, the valve doesn’t leave the rim. This does not allow one to be confident in the accuracy of imitation of all the consequences of a rupture. In addition, the device characterizes with a significant mass, causing a noticeable imbalance of the wheel. The purpose of the invention is to increase the confidence of tire test results by bringing conditions of imitation of their break to real ones. The goal is achieved by the fact that the rupture simulator of a vehicle chamber tire contains a valve fixed on the chamber and freely mounted in the rim opening, a locking element with a rod, an actuator connected to the rod to open the locking element and remote control, the locking element contains a hollow elastic sheath having two openings, one of which its cavity communicates with the cavity of the tire, and the other with the atmosphere, and the rod is installed in the specified holes shell and formed with two bulges, the axial distance between which is greater than the distance between the holes obolomki. .In FIG. 1 shows the proposed device, a section along the axis of the valve; in fig. 2 - installation diagram of the tire rupture simulator on the wheel. The simulator consists of a valve 1 connected to the wheel chamber 2 by means of a washer 3 and a nut 4. The valve freely passes through a hole in the wheel rim (not indicated J. There is an elastic sheath installed in the valve, its diameter is larger than the internal diameter of the valve. On opposite sides of the shell there are the holes 7, through which the shaft-8 passes through the thickenings 9 and 10. The hole 6 and the thickening 9 form an inlet valve connecting the internal cavity of the sheath 5 with the cavity of the wheel chamber. From the version 7 and the thickening 10 form an atmospheric valve The diameters of the bulges are larger than the diameters of the holes and the valves are kept in the closed position due to the tension of the rubber of the shell. 9 The distance between the bulges is that both valves can either be open or one of them will be opened. On the inner surface of the housing there is a flange 11, which serves to securely fix the casing in the housing. The rod 8, via the earring 12, connects with the bark 13 of the electromagnet H, which is mounted on the wheels and rotates with it. The power of the electromagnet is carried out through the collecting rings (not poazany) from the onboard network. The electromagnet turn-on button J is located at the operator's test station. The device works as follows. When the wheel is mounted, the valve 1 is passed through the hole in the rim of the coes and the sheath 5 is inserted into it, which is held in the housing due to the frictional force created by the tension. The rod 8 is set so that the atmospheric valve is closed and the inlet valve is open and the chamber is pumped. The control cavity through the inlet valve communicates with the chamber, therefore, the pressure in the chamber increases the additional pressure of the shell 5 to the body and, together with the flange 11, prevents the shell from being pushed out of the body. The pressure in the control cavity tends to open the atmospheric valve, but the force pushing out the rod 8 is small due to the small section of the bulge 10, and the tension of rubber in the hole 7 is sufficient to hold the valve in the closed position. The inflated wheel is mounted on the vehicle and the rod 8 is attached, through the earring 12 to the bark 13 of the electromagnet 1. The car starts moving and picks up the required speed, after which the operator switches on the electromagnet. The armature of the electromagnet retracts and through rod there is no rod 8. When the rod is moved, first the thickening 9 closes the opening 6, ceasing the communication of the control cavity with the camera, and then the thickening 10 releases the opening 7. Air from the control cavity goes to the atmosphere, pressing the shell to the valve decreases and the pressure in the wheel chamber, overcoming the force of friction created by the pressure, pushes the shells out of the valve, after which the pressure in the chamber drops sharply. The sheath, separated from the valve, is held near the wheel by a rod 8, an earring 12 and a core 13 of an electromagnet. When the flat wheel is rolling, the camera is strongly deformed and carries the valve inside the tire. The valve does not prevent the tire bead from the wheel rim, ensuring that the conditions for imitation of tire rupture are close to real. The use of the present invention allows to obtain more objective information about the behavior of cars and tires in the sudden discharge of the latter, and, therefore, makes it possible to create safer car designs. Formula of Invention A vehicle tire chamber imitator containing a valve mounted on the chamber and freely mounted in the rim aperture, a locking element with a rod, a drive located inside the valve, an actuator for opening the locking element and a device for remote control, etc. that, in order to increase the trustworthiness of the tire test results by bringing the conditions of their rupture simulations to real, the locking element contains a hollow elastic shell, I have The first two holes, one of which communicates with the cavity of the tire, and the other with the atmosphere, and the yc rod is installed in the said holes of the-:. the lobes and are made with two bulges, the axial distance between which is greater than the distance between the openings of the shell. Sources of information taken into account in s 1; spertiz 1.Patent SPI number 3838717, cl. H1-b5, publish. 197. 2. USSR author's certificate for application no., Cl. F 16 L 37/28, 01.29.80 (prototype). at ipug.i