SU1765451A1 - Powered plow complex moving device - Google Patents

Abstract

The invention relates to equipment for coal extraction by underground method and can be. used in plow mechanized complexes. The goal is to increase the reliability of the device by reducing the frequency of operation of the safety valve when the conveyor is depressed and the probability of the jamming of the plow. The device for shifting the plow complex includes a hydraulic cylinder (HZ) of the mechanized support section connected to the conveyor, a control unit hydraulically connected to the low-pressure and drain hydraulic lines (HL). The control unit is interconnected with the GL, which is hydraulically connected through a check valve with a hydraulic lock and through a check valve of the dispenser with the cavity of the metering cylinder and with the hydraulic lock of the dispenser. The valve is interconnected with the rod cavity or with the piston cavity HZ and with a hydraulic lock, as well as through a non-return valve with a tap and a safety unit with a piston cavity or the rod cavity HZ, with the hydraulic lock and with a check valve of the dispenser. After charging the metering cylinders, the plow conveyor is fed to the bottomhole. In this case, the control unit is installed in the appropriate position and the working fluid from the low-pressure head valve enters the cavity of the metering cylinder, moving the piston to the extreme right position, displacing the working fluid from the cavity. At the same time, the working fluid from the GL enters the hydraulic lock, moves the piston and opens it. The working fluid through the open hydraulic lock, the check valve enters the piston or rod cavity of HZ, moving the conveyor, and through the open valve to the closed hydraulic lock and the safety valve. 1 hp f-ly, 2 ill. (L C vi o ate ел ate

Description

The invention relates to equipment for excavating coal by the underground method and can be used in plow mechanized complexes on the basis of aggregate type supports and plow installations of any type,

The aim of the invention is to improve the reliability of the device due to

reducing the frequency of operation of the safety valve when the conveyor is released and the likelihood of jamming of the plow.

FIG. 1 shows the hydraulic circuit of the device (the dosing cylinder is connected to the piston cavity of the hydraulic cylinder of the mechanized support section); FIG. 2 is the same (the metering cylinder is connected to the rod end of the hydraulic cylinder of the powered support section).

The device for shifting the plowed mechanized complex includes a section 1 of mechanized support, the hydraulic cylinder 2 of which is connected to the conveyor 3 of the plow installation, a high-pressure 4 and a low-pressure 5 hydraulic lines and a drain hydraulic line 6, the control unit 7 interconnected with the hydroline 8, which hydraulically through the check valve 9 with a hydraulic lock 10 and through the check valve 11 of the dispenser 12 with the cavity 13 of the metering cylinder 14 and the hydraulic lock 15 of the dispenser 12, as well as with the hydraulic line 16, which is hydraulically connected to the cavity 17 of the cylinder -dozatora gidrozamkym 14 and 15 of the dispenser 12, and a low pressure drain 5 and B Lines in E. The valve 18 is interconnected with the rod end 19 (Fig. 1) or with the piston cavity 20 (Fig. 2) of the hydraulic cylinder 2 and with the lock 10, as well as through a check valve 21 with a valve 22 and a safety block 23, with a piston cavity 2.0 (Fig. 1) or the rod end 19 (Fig. 2) of the hydraulic cylinder 2, with a hydraulic lock 10 and with a check valve 24 of the dispenser 12. The safety unit 23 consists of an additional hydraulic lock 25 and a safety valve 26, a chamber 27 connecting the hydraulic joint 25 and safety valve 26. Chamber 27 of safety block 22 through d ossel 28 hydraulically connected to hydraulic line 29 connecting the pilot controlled check valve 25 to the return hydraulic line 6.

The device for moving the plow mechanized complex works as follows.

When the control unit 7 is installed in the appropriate position, the working fluid from the low-pressure hydroline 5 according to the hydraulic line 8 through the check valve 11 enters the cavity 13 of the metering cylinder 14, moving the piston 30 to the extreme left position. In this case, the hydraulic lock 15 is locked and the liquid from the cavity 17 of the metering cylinder 14 leaves into the hydroline 16 connected via control unit 7 to the drainage hydroline 6. After charging the metering cylinders 14, the plow conveyor 3 is fed to the bottom. In this case, the control unit 7 is installed in the appropriate position and the working fluid from the low-pressure hydroline 5 via the hydroline 16 enters the cavity 17 of the cylinder-processor 14, moving the piston 30 to the extreme right position, displacing the operating fluid from the cavity 13. At the same time, the working fluid from the hydroline 16 enters the hydraulic lock 15, moves the piston 31 and opens it. Expelled from the cavity 13 of the metering cylinder 14, the working fluid through the open hydraulic lock 15, the check valve 24 enters the piston 20 (Fig. 1) or the rod 19 (Fig. 2) cavity of the hydraulic cylinder 2, moving the conveyor, and through the open valve 22 to the closed the lock 25 and the safety valve 26. Since the response pressure of the safety valve 26 is greater than the pressure in the low-pressure hydraulic line 5, the safety valve 26 does not operate.

After the carbon strip has been removed, pressure is applied to hydroline 8 and the cycle is repeated.

If solid inclusions are encountered on the path of the plow along the lava, the cutting resistance of which exceeds the design, an increase in pressure occurs in the piston 20 (Fig. 1) or rod 19 (Fig. 2) cavity of the hydraulic cylinder 2, the safety valve 20 operates and the working fluid enters the chamber 27 of the safety block 23, acting on the piston 32 of the hydraulic lock 25, opens it and ensures the passage of the working fluid from the piston 20 (Fig. 1) or the rod 19 (Fig. 2) cavity of the hydraulic cylinder 2 through the open valve 22 and the open hydraulic lock 25 29 into the drain hydroline 6. At the same time, the working fluid from the chamber 27 of the safety unit 23 through the choke 28 through the hydroline 29 goes into the drain hydroline 6. As a result, the pressure in the chamber 27 drops, and the hydraulic lock 25 closes, compartment the working fluid from the piston 20 ( Fig. 1) or rod 19 (Fig. 2) cavity of the hydraulic cylinder 2.

When moving section 1 of the powered support, the working fluid from the high-pressure hydroline 4 through the valve 18 is fed into the rod 19 (Fig. 1) or the piston 20 (Fig. 2) cavity of the hydraulic cylinder 2 and the hydraulic lock 10, moves the piston 33 and opens it.

Displaced from the piston 20 (Fig. 1) or the rod 19 (Fig. 2) cavity of the hydraulic cylinder 3, the working fluid flows through the open hydraulic lock 10 and non-return valve 9 into the hydraulic line 8 connected through the control unit 7 to the drain hydraulic line 6.

With the autonomous control of the hydraulic cylinder, i.e. spreading (Fig. 1) and folding (Fig. 2) of the hydraulic cylinder, working fluid from high-pressure hydraulic line 4 through hydraulic distributor 18, non-return valve 21 enters piston 20 (fig. 1) or rod 19 (fig. 2) cavity of hydraulic cylinder 2. When This valve 22 must be closed, and the working fluid from the rod 19

(Fig. 1) or the piston 20 (Fig. 2) of the cavity of the hydraulic cylinder 2 is squeezed out via the hydraulic distributor 18 into the drain hydroline 6.

The use of this device will contribute to the expansion of the field of application of the plow groove by creating plow complexes on the basis of aggregate-type supports.

Claims (1)

Claim 1. Device for shifting a plow mechanized complex, including a hydraulic cylinder of a mechanized support section, connected to a plow conveyor, high-pressure, low-pressure and drain hydrolines, a control unit, hydraulically connected to low-pressure and drain hydrolines, with control hydrolines and castings, a hydraulic valve connected hydraulically to the high-pressure and drain lines with a hydraulic cylinder supporting the support section and the hydraulic lock and through the back valve a pan — with a hydraulic cylinder feed conveyor, a dispenser hydraulically connected to the hydraulic cylinder feed conveyor and with a hydroline and through a hydraulic lock of the dispenser and a check valve of the dispenser — with control hydraulic line, a safety unit whose safety valve is hydraulically connected to the hydraulic cylinder feed cavity and drain hydroline, characterized in that, in order to increase operational reliability by reducing the frequency of operation 0 of the safety valve, the safety block is provided with an additional hydraulic lock connected to the safety valve by means of a chamber, while the hydraulic cylinder of the hydraulic cylinder through the additional safety lock of the safety block and the chamber are hydraulically connected to the drain line by means of a drossel. 2, The apparatus according to claim 1, characterized in that the safety valve is hydraulically connected to the piston or rod cavity of the hydraulic cylinder by means of a crane. 12L J5 2 W 33 + -1 I I // / d d-ch-g - I C / fugm-f 15 12 31 15 M Yu 33 Ii.