RU169381U1 - MECHANIZED FASTENER SECTION WITH GUIDE AND SUPPORT BEAMS - Google Patents

Abstract

The utility model relates to mining, namely, to sections of mechanized supports used for fastening and controlling the roof of treatment workings. The section of mechanized supports of a treatment mechanized complex is made with support elements, which are a guide beam along the base and a support beam along the ceiling, which provides walking movement sections with the spread of its supporting elements into the soil and the roof and maintaining their contacts with the side rocks when moving the section stationary. At the same time, the section can be moved with active or passive backing of the overlap into the roof, with rupture of contact with the roof depending on the strength properties of soil rocks and the direct roof, while the dynamic and static stamping of the roof is significantly reduced.

Description

The utility model relates to mining, namely, to the field of mechanized supports of treatment plants in treatment workings.

A well-known section of hydraulic mechanized lining (patent RU No. 2229606, publ. 05.27.2004), containing a base consisting of two parallel, supported by the lower plane on the ski soil with side guides and connected by a portal, supporting the upper rack, installed between the skis on the portal moving jack, acting on the side of the blockage on the thrust placed under the jack of the shifting and connected from the bottom to the conveyor, the mechanism for lifting the base ski with the guide mounted on the thrust in a vertical position a jack comprising a cylinder and a rod, while the rod of the lifting jack of the lifting mechanism is provided with a support with a flat contact surface and with the possibility of its movement in height in the guides, the support being made with a reciprocal surface along the line of contact with the side guides of the base skis.

The disadvantages of the section are: the impossibility of moving the roof support section with an increased support of its overlap in the roof, the unbalanced position of the roof support section in the vertical plane, which leads to jamming of it between the roof and the soil when the support forces increase, and a large difference in the support forces of the support elements of the roof support section to the side rocks in the process of its movement leads to the development of cracks in the rocks of the immediate roof and worsens the overall condition of the roof in the face.

A well-known lining section of type KD90 (Gorbatov P.A., Petrushkin G.V., Lysenko N.M., Pavlenko S.V., Kosarev V.V. Mining machines for underground coal mining. - Donetsk: Nord Computer, 2006. - p. 424-427), containing a base intended for installation on it of hydroracks and other elements with the aim of creating a holistic mechanism in the form of a section and for transferring the forces of resistance to lowering the roof on soil rocks, floors, including the base part and bottom-hole consoles, fences, employees to protect the working space in their area from collapse products, g idle stands with safety valves that create working resistance to lowering the roof rocks, a movement mechanism on the basis of a hydraulic jack of movement, a mechanism for lifting the base toe, which improves the quality of movement of the section in the presence of weak soils.

The drawbacks of the section are: loss of contact between the upper and roof when moving, insufficient amount of expansion to the side rocks when moving in the "active back up" mode, the movement of the lining section at the time of removal of the spacer leads to the effect of dynamic stamping of the roof, which activates the process of development of cracks in the rocks of the immediate roofing and worsens the overall process of managing the roof in the face.

A well-known section of hydraulic walking lining (patent RU No. 2133828, publ. 07.27.1999), containing two parallel, resting on the lying side of the ski as supports for the uprights supporting the roof top, the sliding cylinder supported between the skis on the beam, the retractable piston rod of which acts from the side of the bookmark on the slide bar, which runs under the slide cylinder and is articulated on the chest side of the working face with the face conveyor, and the lifting cylinder supported on the slide bar in the upright position for lifting skiing while walking, while the lifting cylinder is mounted on skis with the ability to move in height in the side rails and connected to them by means of a U-shaped traction clamp supported in the center by the lifting cylinder.

The disadvantages of the section are: the ability to move the lining section only when removing the spacer from the section, which leads to static stamping of rocks of the immediate roof; the imbalance of the action of forces on the lining section in a vertical plane, which, when moving the section to its wedging between the soil and the roof; the movement of the section, accompanied by a “static trampling” of the immediate roof due to the difference in forces at the times and when the pressure was removed from the section before moving it and when the spread of the section was restored after its movement, which worsens the condition of the roof in the working face and reduces the quality of rock pressure control,

Known compensated mechanized lining of the end sections of the lavas (patent RU No. 2069269, publ. 20.11.1996), including a base connected by hydraulic pillars and a guard with a central ceiling, side floors with hydraulic pillars and fences, hydraulic jacks for moving and control, characterized in that the bracket contains side bases that are connected by hydraulic jacks of the sliding with grips to the guide base beam and by hydraulic jacks of control in the direction of the transverse axis to the tongue-and-groove joints of the central base Bani, the grippers are connected to the bases of lateral grippers additional control hydraulic jacks, with lateral overlap control hydraulic jacks are connected at the downhole end and dammed with a tongue and groove central overlap.

The disadvantages of the lining are: the complexity of the design, the small resource of supporting annular closed tapes and sliding supports, a difficult method (technology) of movement.

A known section is powered roof support (patent for utility model RU No. 48584, publ. 10/27/2005), containing a catamaran type base made in the form of skis with side surfaces connected by a portal, between which there is a rod, one end of which is connected to the conveyor, and the other - with a hydraulic jack of movement, a hydraulic stand placed between the top and the base, and a mechanism for lifting the skis of the base mounted on a traction in an upright position, in the form of a hydraulic jack having a cylinder made with a spherical support and provided with a trunnion s, and the rod mounted on the portal, while the trunnions are rigidly mounted on the cylinder, made with conical ends, equipped with protective plates mounted on the trunnions and the cylinder, and placed in closed grooves made in the inner side surfaces of the skis (adopted as a prototype).

The disadvantages of the section are: the impossibility of moving the roof support section with increased backwater; unbalanced position of the lining section in a vertical plane; increasing the likelihood of it jamming between the soil and the roof when moving to the bottom; the movement of the section is accompanied by a static stamping of the rocks of the immediate roof when the load is removed and during subsequent expansion, which worsens the condition of the roof in the working face and reduces the quality of rock pressure control.

The technical result of the invention is to maintain fixed contacts of the supporting elements of the lining section with the roof and soil when moving the section, while the force of spreading the base into the soil and overlapping the roof when moving the section of the mechanized lining of the treatment mechanized complex can be provided at one of three levels: at the initial level spread, active or passive, or adjustable backwater, or with a rupture of contact with the roof, depending on the geological conditions and strength properties of the soil and roofing.

The technical result is achieved by the fact that the overlap of the section is made with a longitudinal groove in which the support beam is mounted with the possibility of moving it to the step of moving the lining section with a hydraulic jack pivotally connected at one end with the overlap and the other with the support beam, while the overlap when moving the section has the ability thrust into the roof through a fixed support beam by means of a portal with a hydro cartridge and a sliding bearing.

The device is illustrated by the following figures:

FIG. 1 - section mechanized lining;

FIG. 2 - section mechanized lining, top view;

FIG. 3 - section powered roof support, front view, where:

1 - visor;

2 - portal for overlapping;

3 - hydraulic jack on the overlap;

4 - overlap (upper);

5 - block fence section;

6 - water resistant;

7 - hydraulic jack of movement on the base;

8 - base section;

9 - base portal;

10 - supporting beam;

11 - sliding carriage along the support beam;

12 - hydropatron over the overlap;

13 - a directing beam;

14 - sliding bearing carriage along the guide beam;

15 - hydropatron compensating device;

16 - downhole scraper conveyor;

h is the step of moving the guide beam.

The mechanized roof support section (Fig. 1) consists of a ceiling (top) 4 with a visor 1 and a portal along the ceiling 2, a support beam 10 (Fig. 2), which is connected by a hydraulic jack on the ceiling 3 to the portal along the ceiling 2, the base of section 8, which connected through the portal on the base 9 with a hydraulic jack of movement on the base 7 with a guide beam 13, which is pivotally connected to the head of the downhole scraper conveyor 16. The support beam 10 is installed in the groove of the floor with the ability to move at least step h (Fig. 3) of the slide section and. The block fence of section 5 is pivotally connected to the overlap (top) 4 and to the base of section 8 of the lining. The overlap (top) 4 is based on the base of section 8 with spreader girders 6. The support beam 10 through the sliding carriage along the support beam 11 (Fig. 2) with a hydraulic cartridge along floor 12 rests on the portal on the overlap 2 of the ceiling of the lining section. The base of section 8 with its portal on the base 9 through the hydropatron of the compensating device 15 and the sliding bearing carriage along the guide beam 14 rests on the guide beam 13.

The device operates as follows. In the initial position, the section is moved to the downhole scraper conveyor 16, the overlap (top) 4 with the visor 1 and the support beam 10 are moved to the bottom. After the strip of coal is removed and the face is moved to the working width of the shearer or by the step of moving the lining (in plow lava), the lining of the lining section is carried out in the following sequence: at the same time, the lining of the lining section is transferred to the soil from the base of section 8 to the guide beam 13 by activating the hydropartridge of the compensating device 15 on the base and from the ceiling (upper), 4 sections on the support beam 10 by turning on the spreader of the hydraulic cartridge along the ceiling 12 along the ceiling. After transfer of the spreader to the guide and support beams, the hydraulic jack on the base 7 and the hydraulic jack on the overlap 3 are turned on, which carry out the movement of the lining section to the bottom (to the conveyor) with support on the fixed guide 13 and supporting 10 of the beam. In this case, the bearing carriage sliding along the stationary guide beam 13 moves along the guide beam 14 together with the base of the section 8, the portal along the base 9 and the compensating device hydropatron 15, and the sliding carriage sliding along the stationary support beam 10 along the supporting beam 11 along with the hydropatron along the floor 12 , portal for overlapping 2 and overlapping (upper) 4.

After moving the section, the hydraulic jacks 3 and 7, the hydraulic cartridges on the base 15 and the floor 12 are switched to drain, the spreader from the beams 10 and 13 is transferred to the floor 4 and the base 8 of the section, and the spacer beam 10 with a hydraulic jack 3 moves along the longitudinal groove of the floor to the bottom by one step h (Fig. 3) the movement of the lining section. The cycle of moving the section ends. The movement of the guide beam 13 is carried out together with the face conveyor 16 after the extraction of the next strip of coal.

The mode of movement of the lining section when transferring the compensating spread from the base of section 8 to the guide beam 13 and from the ceiling (top) 4 to the spacer beam 10 is set by adjusting the pressure of the working fluid in the hydraulic cartridge of the compensating device 15 and the hydraulic cartridge along the ceiling 12: with full compensation of the pressure of the hydraulic struts 6 the overlap (upper) 4 breaks the contact with the roof, which provides a mode of movement of the lining section with a break in contact with the roof; when compensating the efforts of the expansion of the hydraulic struts 6 to the level of the designated backwater (top) support 4 to the roof, carried out in a known manner, the section is moved in the mode with active or passive back-up and, in the case of weak rocks of the immediate roof, the back pressure level (upper) 4 to the roof can be controlled by changing the pressure in the hydro cartridge along the overlap 12 and the hydro cartridge of the compensating device 15, which will provide a mode of movement with adjustable back pressure.

In this way, when moving the lining section, it is ensured: the immobility of the contact of the support beam with the roof — by pressing the beam to the roof; roof maintenance; decrease in the force of friction of the ceiling on the roof; walking movement of lining sections with elevation of the front of the base above the soil of the formation with active or passive backing of the roof; the movement of the section with adjustable back pressure, or with a break in contact with the roof, depending on the geological conditions and strength properties of the soil and the immediate roof, this eliminates the dynamic and static stamping of the roof.

Claims (1)

A section of powered roof support with a guide and support beams, comprising a catamaran-type ceiling and base made in the form of skis with side surfaces connected by a portal, between which there is a rod, one end of which is connected to the conveyor, and the other end to the hydraulic jack of the movement, hydraulic stands located between the upper and the base, and the vertical ski lifting mechanism of the base ski, in the form of a hydraulic jack having a cylinder made with a spherical support and equipped with pins, and mounted on the portal, while the trunnions are rigidly mounted on the cylinder, made with conical ends, provided with protective plates mounted on the trunnions and the cylinder, and placed in closed grooves made in the inner side surfaces of the skis, characterized in that the section is overlapped with a longitudinal a groove in which the support beam is installed with the possibility of moving it to the step of moving the lining section with a hydraulic jack pivotally connected at one end with an overlap and the other with a support beam, while the overlap is and the movement of the section has the ability to thrust into the roof through a stationary support beam through a portal with a hydraulic cartridge and a sliding bearing.

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