SU1752702A1 - Device for controlling shielding against rope overlap during sticking of hoist vessel in shaft - Google Patents

Abstract

SUMMARY OF THE INVENTION: The device comprises a transmitting unit 1, a power source 2, a lift rope position sensor 3, a permanent magnet 4, an electronic switch 5, an electronic generator 6, a transmitting transformer 7, a receiving antenna 8, a receiver 9 signals, a control unit 10, a unit 11 protection. 1 il.

Description

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The invention relates to the field of protection of mine hoisting installations and is intended to protect hoisting installations from rope inlet in the barrel, arising from the overhang of the lifting vessel.

A system of automatic control and protection of a shaft lifting installation from rope inlet is known, comprising a transmitting device mounted in a lifting vessel, a sensor for moving the vessel along the trunk, a communication line formed by reinforcing the trunk and a lifting cable, a speed sensor for the winding body, a receiver with an antenna. connected in a summation unit, a nonlinear element, an amplifier, and a protection unit.

The disadvantages of the system are the complication of the circuit and the reduction of its reliability due to the use of sensors of the speed of movement of the lifting vessel and the coiling body.

A system of automatic control and protection of a shaft-tunnel bucket lifting installation from rope inlet is known, comprising a transmission unit installed in a lifting vessel and including a power source and a converter connected in series, a cable tension sensor, a bucket swing limit sensor, a travel sensor and a communication line formed by the reinforcement of the trunk and a lifting rope, a high-frequency transformer, an antenna with a cable, a receiving device, an amplifier control and protection unit.

The disadvantage of this system is that it is used only for tunneling bumpy lifts, and also the uneconomical mode of operation of an autonomous power supply unit, which reduces the reliability of the entire system.

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

The goal is achieved by the fact that the device for monitoring the rope overwhelm protection when the lifting vessel hangs in the trunk contains a lift cable position sensor located on the lifting vessel, a power source connected to the transmitting unit, the output of which is connected to the transmitting transferor, receiving antenna connected to the receiver of signals, and the control and protection unit, equipped with an electronic generator and a switch located on the lifting vessel, while the output of the electronic generator is connected to the input of a com- a mutator, one output of which is connected to the lift cable position sensor, and the other to another input of the transmitting unit, the output of the lifting rope position sensor is connected to the power source, and the output of the signal receiver is connected to the control and protection unit.

The drawing shows a functional diagram of the device.

The device to control the rope over-run protection includes a transmitter 1 located on the lifting vessel, connected to an autonomous power source 2 connected in series with the reed switch of the position of the rope 3, under the influence of a fixed magnet 4 connected to the head cable and the electronic switch 5 , the input of which is connected with the output of the electronic generator 6. The transmitting device 1 through the transmitting transformer 7 is connected with the receiving antenna 8 mounted on the surface and connected with 9 ISRC signals, the output of which is coupled to a control unit 10, and further with a protection block 11.

The device works as follows.

In normal operation, the reed switch for the position of the head rope 3, under the influence of the magnetic field of the permanent magnet 4, is closed, the generator 6 produces short pulses at the input of the switch 5, which closes the power supply circuit 2 and supplies power to the switch 3. on the transmitting device 1, for a time equal to the duration of the pulse produced by the generator 6.

The transmitting device 1 transmits a signal to the receiving antenna 8 through the transmitting transformer 7 and the communication line formed by the hoisting rope and the barrel reinforcement, and from its output the signal is fed to the input of the signal receiver 9, and then through the driver 12 rectangular pulses to the reset input the counter 13, to the counting input of which pulses are received from the generator 14, since the signals to the reset input of the counter 13 arrive at a frequency that does not allow the counter to overflow, there is no signal at the output of the counter. In this case, the protection unit 11 closes its contact in the protection circuit.

When the lifting vessel hangs in the barrel, the reed sensor 3 comes out of the magnetic field of magnet 4 and opens its contact in the power supply circuit of the transmitting device 1. The next impulse from the transmitting device 1 will not go to the reset input of the counter 13, and the counting input of the counter 13 will be continue to receive pulses from the generator 14. When the counter 13 overflows at its output

5 17527026

by WITS signal, which will turn off the unit for the purpose of increasing the reliability of control,

the shields 11. it is equipped with an electronic generator located on the hoist of the formula of the invention, and

The control device of the protection from the start-up switch, with this output of the electron-scan when the lifting vessel hangs, the 5th generator is connected to the input of the switch compartment, which contains located nator, one output of which is connected to

lifting vessel position sensor pod-lift position of the lifting rope a

cable, power source, connect-another - with another output of the transmitting

connected to the transmitting unit, the output of the unit, the output of the lift position sensor which is connected to the transmitting transfer of the 10th cable is connected to the power source, and

A receiver antenna, a signal receiver output connected to the signal receiver, and a monitoring and protection control unit, characterized in that

Claims (1)

Claim A device for monitoring protection against cable inlet when the lifting vessel hangs in the barrel, containing a position sensor for the lifting cable located on the lifting vessel, a power source connected to the transmitting unit, the output of which is connected to the transmitting transformer, a receiving antenna connected to the signal receiver, and a control unit and protection, with the fact that, with 32 ^{6 in} order to increase the reliability of control, it is equipped with an electronic generator and a switch located on the lifting vessel, while the output of the electronic generator is connected to the input of the switch, one output of which is connected to the position sensor of the lifting rope, and the other to the other output of the transmitting unit, the output of the position sensor the hoisting rope is connected to a power source, and the output of the signal receiver is connected to the control and protection unit / Compiled by L. Nodelman Editor V. Bugrenkova Tehred M. Morgenthal Corrector Llukach Order 2730 Circulation Subscription VNIIIPI of the State Committee for Inventions and Discoveries under the State Committee for Science and Technology of the USSR 113035, Moscow, Zh-35, Raushskaya nab., 4/5 Production and Publishing Combine Patent, Uzhgorod, 101 Gagarin St.