SU690452A1 - Device for horizontal positioning of lifting mechanism self-propelled platform - Google Patents

Description

one

The invention relates to automation equipment and is intended primarily for automatic leveling of the platforms, in particular for aircraft maintenance.

A device for automatically leveling objects is known, comprising a switching unit, a reference and control level sensors, a feedback sensor, counters, and an adjustment unit associated with the actuators 1.

However, the known device cannot be used to align the position, i.e., to level the autonomous site, since its use requires a base surface.

The closest to the invention in technical essence and the achieved result is a device for leveling a self-propelled platform of a lifting mechanism, comprising a platform tilt detection unit with roll sensors, a control unit connected to the outputs of the platform tilt detection unit and including a power switch and actuators

relay elements, the opening contacts of which are included in the control circuit of the lifting mechanism, and the closing ones - in the power supply circuit of the controlled distributors, included in the power lines of the actuators, each equipped with a pressure sensor 2.

The disadvantages of the known solution are the complexity of the circuit and the lack of elements to control the leveling accuracy, which ultimately reflects on the reliability of the device.

The purpose of the invention is to increase the reliability of work.

Claims (3)

This is achieved by the fact that the proposed device is equipped with a level gauge, made in the form of a photo sensor with a photocurrent amplifier, the power supply of which includes the closing contacts of the power supply relay, the output of which is connected in series with the opening contacts of the relay elements of the control unit, one in series from the roll sensors — and the closing contacts of the power relay, in the power supply circuit of which winding the pressure sensors connected in series are connected, as well as the fact that the photosensor The meter is made of a liquid-filled opaque hollow cylinder with a spherical bottom, having openings in the bottom and a lid, covered with transparent material, in which an opaque ball is placed, with a main photoresistor electrically connected to the input of the photocurrent amplifier, and An illuminator in the form of a bulb is installed against the upper hole in the cap of the level gauge, the power supply circuit of which includes the make contacts of the power relay; moreover, an additional photoresistor is installed in the photosensor, which is directly illuminated by the illuminator and connected via a resistor to the input current of the photocurrent amplifier. The drawing shows the scheme of the described device for leveling the self-propelled platform of the lifting mechanism. The device includes actuators 1, 2, 3, 4 (such as outriggers), whose power hydraulic systems include pressure sensors 5, 6, 7, 8 and controllable valves 9, 10, 11, 12, respectively, tilt determination unit 13 platforms with sensors 14, 15, 16, 17 crepe, for example, liquid, control unit 18 with power supply relay 19, voltage converter 20, dissolving diodes 21, 22, 23, 24, 25, 26, 27, 28, relay elements 29, 30, 31, 32 and rectifying bridges 33, 34, 35, 36, level gauge 37 with balloon 38, main photoresistor 39, additional control photoresistor 40 the illuminator 41, a photodot amplifier (Lcha 42 with a voltage divider resistor 43, a signal input 44, a power input 45, an output 46, a signal 47 for controlling the lifting mechanism. The device works as follows. After installing the actuators 1, 2, 3, 4, when the actuators in the hydraulic system reach a predetermined pressure (in each actuator), all pressure sensors 5, 6, 7, 8 operate and turn on the power supply relay 19, which sends a signal to the power input 45 of the photocurrent amplifier 42, to the illuminator 41 and to the input prev spreading device 20. In the case of a platform tilting, for example, forward and right, the sensors 14 and 16 of the roll of the block 13 simultaneously close their contacts and connect the elements 29, 31 via the bridges 33, 35. The latter break the control circuit 47 of the lifting mechanism and 11, 12, the control mechanisms 1, 3, 4, which align the platform, raise its front and right sides. At the same time, the sensors 14, 16 open their contacts and disconnect the elements 29, 31, which prepare the chain 47 for controlling the lifting mechanism and break the power supply circuit of the distributors 9, 11, 12. The operating mechanisms stop. At the same time, at the time of platform leveling, the level gauge 37, completely filled with liquid with a specific weight, slightly less than the specific weight of ball 38, is set in the working position to ensure smooth movement of the ball (damping) but at the bottom of the spherical shape, closing the hole above the main photoresistor 39 from the beam from the illuminator 41 hitting it. The signal from the main photoresistor 39 through the output 46 of the amplifier 42, through the closed contacts of the elements 29, 30, 31, 32 is applied to the center 47 control hoist mechanism. When the ground is being deposited during work under the supports of the self-propelled platform, it tilts by an angle more than acceptable, the gauge 37 will tilt by the same angle, and the ball 38 will move to the side, opening an opening in the bottom of the gauge. On the main photoresistor 39, a beam of light from an illuminator 41 falls and a signal through a resistor of a voltage divider 43 is supplied to the input 44 of an amplifier 42, which de-energizes the control circuit 47. At the same time, the contacts of the respective sensors 14, 15, 16, 17 are closed and the process of leveling the platform begins automatically. in the event that the illuminator 41 fails, the signal from the auxiliary photoresistor 40 is fed to the input 44 of the amplifier 42 and de-energizes the value 47 of the control. Thus, in the described device, in the course of work, automatic, continuous control over the quality of leveling is carried out, thus ensuring increased reliability of operation and eliminating the possibility of creating an emergency situation. Claim 1. Device for leveling a self-propelled lifting platform, comprising a platform tilt detection unit with roll sensors, a control unit connected to the outputs of the platform tilting detection unit and including power relays and actuating elements, the breaking contacts of which are included in the lifting control circuit the mechanism, and the opening ones - into the power supply circuit of the controlled distributors included in the power lines of the actuators, each equipped with a sensor and In order to increase the reliability of operation, it is equipped with a level gauge, made in the form of a photo sensor with a photocurrent amplifier, the power circuit of which includes the closing contacts of the power relay, and the output of which is connected in series with the break contacts of the relay elements of the control unit, into the circuit power supply of each of which are connected in series one of the sensors of the roll and the closing contacts of the power supply relay, in the power supply circuit of which winding are connected in series the pressure sensors. 2. The device according to claim. 1, characterized in that. that the photo sensor of the level gauge is made in the form of a liquid filled opaque hollow cylinder with a bottom, spherical shape, having openings in the bottom and a lid, covered with a transparent material, in which an opaque ball is placed, and opposite the hole in the bottom of the level gauge main photoresistor. electrically connected to the entrance; 1plitter (|) outflow 1.; ipn,) an illuminator in the form of a light bulb is installed in the top opening in the level cover. the power supply circuit of which includes short-circuit power relay contacts. 3. The device according to PP. 1 and 2, characterized in that an additional photoresistor directly illuminated by the illuminator and connected through a resistor to the input of the photocurrent amplifier is installed in the photosensor. Information sources, prpi tms pp BiniMninte at examination 1. ABT () ii) 0 CiJM.lCTC.IbCTBO USSR , M 506005. K.-I. G 05 D 3/04, 05/31/73. 2. Aator's certificate of the USSR L 422681, cl. 66 C 23/78, 05.13.71 (prototype).