SU1425344A1 - Apparatus for steering the base of cutter-loader in seam profile - Google Patents

Abstract

The invention relates to the mining industry, namely to means of controlling the movement of the cleaning units in the plane of the formation. The goal is to improve the accuracy of unit maintenance in the formation profile by automating the control of the position of the axis of the base sections. Sections of base 1 are pivotally connected to the rods of the main and intermediate hydraulic cylinders (HZ) 5,6,7 of control, the cavities of the main HZ 5 communicate with the outlets of hydraulic locks 9 of double action, the inlets of hydraulic locks 9 through hydraulic lines 10 and 11 to the outlets of hydraulic distributors (GR) 12, The inputs of the GR 12 are connected to the pressure and drain hydrolines 13, 14. Lines 10 and 11 through the hydrolines 15 and 16 are connected to the inputs of the distribution hydraulic block 17 and the additional hydraulic block 18, the outputs of which are connected to the hydraulic lines 19 and 20. Through the inputs of the additional hydraulic locks 21, the lines 22 are in communication with the approach of an angular displacement sensor 23 located above the base sections. Another sensor 26 is located below the base sections and is connected to HZ 7. The piston and rod end of the HZ 7 are connected to hydraulic lines 19 and 20 via a hydraulic lock 30.2 or so on.

Description

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The invention relates to mining prodigaleknost, namely to the means of controlling the movement of cleaning units in the plane of the reservoir. The purpose of the invention is to improve the accuracy of maintaining the unit in the profile of the reservoir by automating the control of the axis position of the base sections

FIG. Figure 1 shows schematically the device for controlling the base of the cleaning unit in the profile of the formation in the position of movement of the unit downward from the initial position; FIG. 2 shows the principle hydraulic circuit of the device.

The device includes base 1 sections connected by hinges 2. Base sections

I are connected with the guide 3 for movement of the plow and with the square 4. On the dam side of the section 1 of the base 1 are articulated with the rods of the main

5 and intermediate 6 and 7 ri-odrotsilindrov management. In turn, the hydraulic cylinders 5-7 are hingedly connected to the sub-base beam 8. The cavities of the main hydraulic cylinders 5 communicate with the outlets of hydraulic locks 9 of bilateral action, the inputs of which are through the hydraulic lines 10 and

I1 are connected to the outlets of control valves 12, the inputs of which are connected to the pressure 13 and drain 14 hydrolines. Hydrolines 10 and 11 through hydrolines 15 and 16 are brought to. the inputs of the distribution hydroblock 17 and the additional distribution hydroblock 18 (double-acting hydraulic locks) 5, the outputs of which are connected to the hydraulic lines 19 and 20 of the joint. Hydrolines 19 through the entrances of additional hydraulic locks 21 of bilateral action, their exits, hydrolines 22 communicate with the input of the sensor 23 of the angular position of the base section, the output of which through the hydroline 24 is connected to the piston cavity of the intermediate hydraulic circuit 6, and to the hydraulic line

20 through the inlet of the hydraulic lock 21, its exit, the hydroline 25, the output of the sensor 26 of the angular position of the base sections, its entrance and the hydroline 27 connect the rod cavity of this hydraulic cylinder. The follower (lever) 28 acts on the pusher (stem) of the sensor 23 located above the hinge 2 of the base 1 section, and the stop (lever) 29 of the pusher (stem) of the sensor 26 located below the hinge 2 pushes the piston and rod of the hydraulic cylinder 7 connected to

hydrolines 19 and 20 through hydrosamo

30 sided action of the hydroline

31 and 32.

Control is performed by each Hydrodistributor 12 manually or automatically. In the neutral position of the latter, the fluid pressure in the hydrolines 10 and 11 is absent and the hydraulic locks 9, 21 and 30 fix the position of the main 5 and intermediate 6 and 7 hydraulic cylinders. When, for example, the left hydraulic distributor 12 is turned to the extreme right position, the pressurized liquid from the hydraulic line 13 through the hydraulic lock 9 enters the piston cavity of the main hydraulic cylinder 5. The piston of this hydraulic cylinder begins to move upwards, raise the base 1 section relative to the sub-base beam 8, so that the angle bracket 4 is pressed against the soil. Since the right main hydraulic cylinder 5 is turned off, the corresponding section of base 1 does not move. Hydrolines 15 and 16 and hydrolock 17 hydrolines 19 and 20 are also connected to pressure and 13 and drain 14 hydrolines, respectively. Through the hydraulic locks 30 and hydroline 31, pressurized fluid enters the piston cavity of the control hydraulic cylinder 7, from the rod end of which through the hydroline 32, the hydraulic lock-30, the hydroline 20, the hydraulic lock 17, the hydraulic lines 16 and 10 enters the drain hydraulic line 14. At the same time, the piston of the hydraulic cylinder 7 moves upwards. Since the position of the hinge 2 associated with the base 1 section of the right hydraulic cylinder 5 is fixed, the base 1 section associated with the hydraulic cylinder 7 is rotated around this hinge. At the same time, from the hydraulic line 19, the working fluid under pressure through the hydraulic lock 21, hydraulic line 22, sensor 23 for the angular position of the intermediate base sections, hydraulic line 24 enters the piston cavity of the hydraulic cylinder 6, From the rod end of the hydraulic cylinder 6, the hydraulic line 27 through the sensor 26 for the angular position of the sections the base, the hydroline 25, the hydraulic lock 21 enters the drain through the hydroline 20. The piston of the hydraulic cylinder 6 also moves upwards, while the base 1 section connected with it rotates relative to the hinge 2 connected with the left main section second base. The sensor 2 is configured so that when the longitudinal axes of the base 1 sections connected to the hydraulic cylinders 6 and 7 coincide, the lever 28 connected to one of the sections acts through its stem on the valve, ensuring the flow of liquid from the hydraulic line 22 to the hydraulic line 24, Sensor 26 is likewise tuned in the same way, however, with a given direction of fluid movement, its valve does not prevent this movement in any position of the rod.

If the speeds of movement of the pistons of the hydraulic cylinders 6 and 7 are lower than required, the distance between the sensor 23 and the lever 28 decreases, which leads to an additional opening of the valve of the sensor 23, an increase in fluid flow through it and an increase in the speed of movement of the hydraulic cylinder 6, due to the hinge connection of the intermediate sections The base 1 increases and the speed of the piston of the hydraulic cylinder 7. As a result, the misalignment of the axes of the intermediate sections of the base decreases. However, with an excessive increase in the speeds of movement of the pistons of the hydraulic cylinders 6 and 7, the distance between the lever 28 and the sensor 23 increases, which causes the valve of the latter to close. As a result, the piston of the hydraulic cylinder 6 stops, which causes the piston of the hydraulic cylinder 7 to stop. Since the piston of the hydraulic cylinder 5 continues to move, this leads to a decrease in the mismatch angle of the longitudinal axes of the intermediate sections of the base 1 and automatic activation of the hydraulic cylinders 6 and 7 h

When turning on the left hydraulic distributor 12 to the extreme left position, the piston of the hydraulic cylinder 5 moves downwards. At the same time, the hydrolines 20 will be connected to the pressure hydraulic line 13 via the hydraulic lock 17, and the hydraulic valve 19 to the drain hydraulic line 14, Through the hydraulic lock 21, hydraulic line 25, sensor 26 and hydraulic line 27, the pressurized fluid enters the rod cavity of the hydraulic cylinder 6, from the piston cavity which fluid through the hydroline 24, the sensor 23, the hydroline 22, the hydraulic lock 21 enters the hydroline 19 and further to the drain. Since the lever 29 acts on the valve of the sensor 26 and it is slightly opened, the piston of the hydraulic cylinder moves downwards. At the same time, the rod end of the hydraulic cylinder 7 is connected to the discharge, and the piston cavity to the drain, and its piston also moves downwards. In the case of misalignment of the axes of the intermediate base sections, the sensor 26 either increases or decreases the speed of movement of the piston of the hydraulic cylinder 6, similarly to the previous one.

Q Device works similarly.

If the left valve is left off, and the right valve is switched to the appropriate position, in this case, the hydraulic lines 19 and

5 20 are connected to the injection 13 and drain 14 hydrolines through a hydraulic lock 18,

If the valves 12 to install simultaneously in the extreme right

Q or left position; the device will move the main and intermediate cylinders up or down with automatic control of the coincidence of the longitudinal axes of the intermediate sections.

5 bases.

Claims (1)

Invention Formula The control unit base of the cleaning unit in the profile of the reservoir, including hydraulic control valves, which control the base section groups, the inputs of which are connected to the head and drain hydraulic lines. the outlets through the hydroline and two-way hydraulic lock are connected to the working cavities of the main one, and through the expansion section, the separating hydraulic block and the additional two-way hydraulic lock to the working planes of the two intermediate hydraulic cylinders located between the main and connected to the hinge-connected sections of the base of the unit , different By the fact that, in order to improve the accuracy of the maintenance of the unit by automating the control of the position of the axis of the base sections, it is equipped with an additional distribution hydraulic unit, the outputs of which are communicated through hydraulic lines with the outputs of the distribution hydraulic unit and the inputs of the additional two-way hydraulic locks of the adjacent group of base sections, the inputs are connected to the outputs of the control hydraulic distributor, and the paired angular position sensors,; one above, the other below the hinge of the base section connection. (in those with intermediate hydrotsi-: | indra, each of which is made of 4 types of hydraulic locks, the body of which is fixed on one side of the hinge, and the roll is mounted with the ability to interact with the stop made tia section of the base located on the other side of the hinge, while one Additional bilateral exit the hydraulic lock is connected to the input of the lower angular position sensor, the output of which is arranged to be connected with the rod cavity of the intermediate hydrocylinder, the piston cavity of which is connected to the output of the upper angular position sensor, the input of which is connected to another output of the bilateral hydraulic lock. 0a3.J