SU523014A1 - Device to control the movement of the lifting vessel in the shaft - Google Patents

Description

one

The invention relates to the field of indicator and signal devices of lifting installations, in particular, mine lifting machines.

A device is known for controlling the stirring of the lifting vessel in the shaft of the mine, containing its magnetically sensitive elements mounted on the lifting vessel and connected to the input of a transfer element installed on the lifting vessel inductively connected to the receiving element in the machine room of the lifting installation through a communication channel. made in the form of a stationary ferromagnetic rope laid along the shaft with magnetic marks uniformly applied on it, interacting with them when the lifting vessel moves with the magnetically and void elements.

However, the known device is not sufficiently reliable and does not provide the necessary accuracy for controlling the unwinding, lifting of the lifting vessel, because the equipment located on the lifting vessel is caused by the need to encode information and a large number of magnetic modulation heads, is complex and insufficiently reliable, and the quantum of received information is equal to the step of magnetic tags on the rope, which can not be less than 0.6-0.4 m, which in a number of cases does not provide the necessary accuracy of control.

The aim of the invention is to improve the accuracy of controlling the movement of the lifting vessel, as well as improving the reliability of the device.

For this, the magnetosensitive elements are spaced along the rope one relative to the other by a distance equal to a quarter of the pitch of the magnetic marks, and the transmitting elements are made with different frequency parameters at the output, and the machine for generating counting pulses and recognizing the direction of movement of the lifting vessel are additionally installed in the machine room, and the receiving the element is equipped with frequency filters, outputs

which are connected to said block.

FIG. 1 schematically shows the proposed device; in fig. 2 is a diagram of t / i, t / 2, t / 3, U signals as a function of the movement of the lifting vessel.

Along the trunk, along which the lifting vessel 1 moves, a steel rope 2 is laid, on which magnetic marks are applied with a constant pitch L. On the lifting vessel 1 magnetosensitive elements 3 are strengthened

and 4, the distance between the axes of which is

-, as well as the transmitting element 5, through the coil 6 inductively connected to the rope 2. The coil 7 is installed in the machine room of the lifting installation and connected to the receiving element 8, the output of which is connected to the inputs of frequency filters 9 and 10 whose outputs are connected to the inputs inverters I, 12, as well as with the inputs of the block 13 for forming the track counting pulses and recognizing the direction of movement of the lifting vessel made with three outputs 14, 15, 16.

The device works as follows.

When the magnetic mark is opposite the magnetically sensitive element 3, a frequency signal i appears at its output, and when the pauses pass between the marks, this signal is absent. The magnetically sensitive element 4 works in the same way. But the frequency of its output signal is / a. Both signals through the transmitting element 5 and the transmitting coil 6 enter the communication channel for which the rope is used.

The signals are sensed by the coil 7 and the receiving element 8, at the output of which, as the magnetically sensitive elements 3 and 4 pass by the magnetic marks, there appear a batch of pulses of a frequency fi and / 2, respectively. This signal is sent to frequency filters 9, 10, tuned to frequencies / 1 and / 2, respectively. When magnetically sensitive elements 3 and 4 pass by magnetic marks, potential signals Ui and LJ appear at the outputs of filters 9 and 10, which, together with signals f (s) and U, obtained using the i-inverters 11, 12, are fed to the block 13 for forming the track counting pulses and recognizing the direction of movement of the lifting vessel, which is, for example, a set of potential-pulse circuits, and provides the output pulse 15 s L / z from each edge of the input signal f / i, / 72, (/ 3, U. Graph

in fig. 2 shows that the travel pulse quantum bb is -.

In addition, the inverter 11 provides at one of the outputs 14 or 16 the appearance of a potential in accordance with the sequence in which the signals t / i, (/ 2, 3, U enter the inputs), which in turn is determined by the direction of movement of the lifting vessel.

Claims (1)

Invention Formula A device for controlling the movement of a lifting vessel in a dashboard, containing magnetically sensitive elements mounted on a lifting vessel, connected to the entrance of a transmitting element mounted on a lifting vessel, inductively connected to a receiving element in the machine room of a lifting installation by means of a communication channel made in the form of a fixed ferromagnetic rope laid along the barrel with uniformly applied magnetic marks on it, interacting with the movement of a PII of an ascent vessel with the mentioned magnetically sensitive elements, characterized in that, in order to increase the accuracy ntrol moving the lifting vessel, as well as improving the reliability of the device, magnetically sensitive elements are spaced along the rope one relative to the other by a distance equal to a quarter of the pitch of the magnetic marks, and the transmitting elements are made with different frequency parameters at the output, and in the machine room there is an additional unit for forming the counting pulses and recognizing the direction of movement of the lifting vessel, and the receiving element is equipped frequency filters whose outputs are connected to the aforementioned unit.