SU863876A2 - Remote control device for roof support units - Google Patents

Description

(54) DEVICE OF REMOTE CONTROL OF CREATIVITY SECTIONS

one

The invention relates to the coal industry, in particular to means of remote control of mechanized lining of clearing workings.

Devices for remote control of support sections are known, which do not use a flexible thread for switching hydraulic control valves with a toothed rack, which is stirred along the support sections, and the gear rack engages with a gear mounted on the control valve shaft and switches it to the required position 1.

The disadvantage of such a device is a rigid travel program, as well as a gear pinching.

It is also known a device for switching hydraulic distributors, which uses a flexible thread with a gripper made in the form of a truncated cone. The grip can act on the ratchet wheels mounted on the control valve axis and rotate them by one position 2.

The disadvantage of such a device is the inability to carry out reversible

the control of hydraulic distributors, as well as the lack of control over the movement of the support section.

It is also known a device, the cable of which is provided with two grippers interacting with spools made with holes 3.

The disadvantage of such a device is the lack of control over the completeness of the movement of the support section.

It is also known a device in which a mobile carriage is equipped with permanent magnets interacting with magnetic contacts mounted on a monorail 4.

The disadvantage of such a device is the 5th rigid travel program.

It is also known a device for switching hydraulic distributors, in which a carriage is used, made in the form of cams pivotally connected by an elastic plate. The carriage is set in motion with a rope. On the axles of the hydraulic distributors, Maltese crosses are installed, which are affected by the carriage 5.

The disadvantage of such a device is a rigid travel program, as well as the lack of control over the completeness of the movement of the support sections.

According to the main author. St. No. 344138 a device for remote control of support sections is known, which includes a mobile carriage with contacts, a drive, a haul rope, a monorail, a hydraulic distributor and a control panel, and Maltese crosses are fixed on the axles of the hydraulic distributors, corresponding grooves of the cross 6.

The disadvantage of such a device is the impossibility of selectively controlling the hydraulic distributors (rigid track program) due to the fact that the bobbins successively engage with Maltese crosses, switching them only in one direction.

The purpose of the invention is to provide selective control of the hydraulic distributors.

To achieve this goal, the carriage is equipped with a block, a microdrive and rods with a spring-loaded bar mounted on them, on which a cable is rigidly fixed, connected through a block with an actuator connected to the control panel, while the pinch brackets are made on the bar.

FIG. 1 shows schematically the proposed device, a general view; in fig. 2 - diagram of the interaction of the plate with the hydraulic distributors.

The remote support of the support sections comprises a carriage 1, which is moved along the guides 2 of the monorail 3 by the actuator 4 by means of a rope 5.

The carriage 1 is movably mounted with rods 6 with springs 7. A bar 8 is rigidly fixed to the rod 6 with tsoles 9, to which a cable 10 is attached, covering the block 11 and connected to the microdrive 12.

On the carriage 1 there are rigidly mounted contact brushes 13 with two contacts Ki Kg (according to the number of positions where the carriage stops are required) and the limit switch 14, which serves to control the completeness of the support section movement.

On the monorail 3, opposite to each section, there are installed hydraulic distributors 15 with Maltese crosses 16, as well as fixed contacts 17 interconnected to each other and the control panel 18 of the actuator 19.

The device works as follows.

The actuator 4 by means of the rope 5 moves the carriage 1 along the guides 2.

When the pin 9 is moved, it engages with the Maltese crosses 16 by switching the valve 15 to the position of “releasing the thrust, while the contact Ki,

Closing the station with fixed contact 17 on the monorail 3, gives the command to stop the carriage 1. In this case, the carriage 1 stops on the operation "Clearing the thrust."

After performing this operation, the control panel 18 sends a command to the operation "shifting and the carriage 1 is moved by an amount which ensures the switching of the control valve to the position corresponding to this operation.

° When closing the contact Ks on the carriage

with a fixed contact 17, a command is issued to stop the carriage in a position corresponding to the operation "shifting."

At the end of the slide, the stop mounted on the support section acts on the limit switch 14, which transmits to the control panel 18 a signal about the end of the slide.

Having received the signal, the machinist lining gives

the carriage command to perform the operation “thrust and transfer to the control of the next section.

When performing these operations, the microdrive 12 creates a tension force of three, 10 that provides compression of the springs 7, thus achieving the movement of the bar 8 to the carriage, while the bolts 9 do not engage with the Maltese cross 16 and the carriage 1 moves over the control valve, not switching him.

0 After that, the machinist switches the microdrive 12 to the initial position, which leads to the movement of the bar 8 with the pinholes 9 under the action of the springs 7 downwards and passes to the control of the selected valve.

The technical advantage of this device is the possibility of obtaining selective control due to the use of a movable bar with bobbins mounted on the carriage.

0 The proposed device allows the operator to remotely control the movement of the lining sections in the lava and can be used to control the movement of the lining sections on thin layers during unmanned coal excavation.

Claims (6)

Invention Formula Remote control unit Q lining sections according to ed. St. No. 344138, characterized in that, in order to provide selective control of the hydraulic distributors, the carriage is provided with a block, a microdrive and rods with a spring-loaded bar mounted on them, on which a cable is rigidly fixed, connected through the microdrive block connected to the control panel, with This bobbin performed on the bar. Sources of information taken into account in the examination 1. USSR author's certificate 284940, cl. E 21 D23/00, 1970. 2Avtor's certificate of the USSR 303445, cl. E 21 D23 / 00, 1971. 3Avtor's certificate of the USSR 313980, cl. E 21 D23 / 00, 1971. 4. USSR author's certificate number 376578, cl. E 21 D23 / I6, 1973. 5. USSR author's certificate number 377521, cl. E 21 D23 / 12, 1973. 6. USSR author's certificate No. 344138, cl. E 21 D 23/00, 1972 (prototype).