Face support cantilever cap turning position determination method and device and face support cantilever cap turning device

FIELD: mechanisms.

SUBSTANCE: invention relates to powered support elements position monitoring devices. Disclosed is face support cantilever beam (10) turning position determination method, which by means of, at least, one hydraulic cylinder (14) can be turned about axis relative to face support cap (12) between retracted position and extended position, characterized by fact, that determining pressure in hydraulic cylinder annular space (24) and/or in piston space (26) and depending on determined pressure making conclusion on turning position.

EFFECT: technical result is providing accuracy of cantilever support turning position determining without need for arrangement of necessary components in face support potentially hazardous zone.

11 cl, 4 dwg

 



 

Same patents:

FIELD: mining.

SUBSTANCE: in the proposed method for adjustment of automatic control of plough level in existing breaking faces for each plough stage they register depth of cutting and angle of longitudinal inclination produced as a difference angle between the inclination of the shield support frame bed roof slab and inclination of the face conveyor in direction of mining. In the calculation device they calculate variation of face height per plough stage so that in the calculation device with each position of the face conveyor corresponding to one plough stage they correlate face height as the plan height. At the same time in process of achievement of the corresponding position in the face with the shield support frame following the plough with a delay in time, they calculate actual height of the face on the basis of values taken by inclination sensors installed on the shield support frame and compare them with the plan height stored in the memory. The value of heights difference determined for the appropriate position in the face between the plan height and actual height during the following plough stages is taken into account in the sense of effect of self-training by the calculation device in process of setting of the angle of longitudinal inclination adjustment in the plough stage for achievement of the plan height of the face.

EFFECT: higher accuracy and reliability of plough control in a bed profile.

23 cl, 10 dwg

FIELD: mining.

SUBSTANCE: in order to control legged locomotion machine in underground fastening of long face, distance between conveyor and one of support sections is determined by means of sensor. At that sensor is an ultrasonic sensor and/or a chamber. The sensor is connected to control system, which actuates device for control of legged locomotion machine cylinder depending on signals.

EFFECT: improving reliability of control of conveyor and support section position.

18 cl, 4 dwg

FIELD: mining.

SUBSTANCE: hydraulic circuit for lava support contains set of units (units of shield support), where hydraulic power drives (cylinders 4) and appropriate to it hydraulic operating valves (auxiliary valves 16 and main valves 17) are connected to forcing line (1) and supplying line, and also with drain line (2) and withdrawal line. In supplying line there is located check valve (9), overlapping the flowing of hydraulic fluid from appropriate power drive to forcing line and actuated for locking irrespective of command, delivered to hydraulic operating valve, and from position of these operating valves. Locking valve is preferentially implemented in the form of nonreturn valve, overlapping the flowing of hydraulic fluid from appropriate power drive (4) to forcing line (1).

EFFECT: invention allows improving of hydraulic systems and providing ability of upgrade reputed systems without essential expenses.

4 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention concerns mining and is designed for hydraulic lining control. The hydraulic lining control system includes multiple sections adjustable for implementing of lining functions, i.e. relieving, shifting and arch action. Also each power gear of the system has hydraulic valves close to the respective power gears and divided into groups. Each group is connected to a hydraulic delivery pipe running along the aligned lining section by a group connection line blocked by a group shutoff valve subject to the state of control valves with all control valves unengaged.

EFFECT: improved reliability of lining control.

6 cl, 2 dwg

FIELD: mining.

SUBSTANCE: shield covering includes cover plate 2, receiving devices 4 for connection of heads of hydraulic cylinders with shield covering and support structure 3 welded under cover plate 2 and having multiple longitudinal cross beams. Besides, at least two longitudinal cross beams consist of H-section beams 10 with upper flange 12 of section, lower flange 11 of section and intermediate flange 13 passing perpendicular to two above mentioned flanges of the section, and distance between upper and lower flanges of section decreases at least on some part of length of H-section beam.

EFFECT: higher bending strength of shield covering and reduction of metal consumption of the design.

20 cl, 14 dwg

FIELD: mining.

SUBSTANCE: shearing shield of powered roof support section includes hydraulic cylinder, cleavers with wedge-like crack-formers and wedge-like dividers. Note that crack-formers and dividers are arranged in perpendicular plains and have stepped shape and their cutting edges are blunted.

EFFECT: decrease of regrinding, decrease of energy output of coal destruction and other rocks and exclusion of boulders output.

4 dwg

FIELD: mining.

SUBSTANCE: powered support section comprises a base, a barrier element, a four-terminal network, a supporting element and hydraulic props. Hydraulic props are inclined towards a dump part of a long face. There are cutter wedges arranged on the supporting element of the powered support section along side edges of the supporting element upper section along its whole length. Cutter wedges are fixed to the upper plane of the supporting element. Each cutter wedge is a triangular pyramid. The top and the rib of this pyramid are arranged on the same axis with a hydraulic prop axis, and the base is arranged on the supporting element surface. The pyramid base is fixedly connected to a supporting element and represents an isosceles triangle, the top of which is arranged in the bottom part of the long face, and the base is located in the dump part of the long face.

EFFECT: improved safety of mining.

4 dwg

FIELD: mining industry, namely, mechanized lining for supporting sloping drifts.

SUBSTANCE: frame has slides, beam, and hydraulically loaded posts included between slides and beam. Beam is divided in longitudinal direction on two beam elements. Each beam element is supported freely at least by one post, mounted on single slides.

EFFECT: soft roof pickup and prevented twist-causing loads.

12 cl, 3 dwg

FIELD: mining, particularly to develop coal, potassium and rock salt formations with mechanized mining complexes.

SUBSTANCE: powered support section covering comprises apron in which sliding apron supported by guiding means is installed and hydraulic jack for sliding apron movement. The sliding apron is covered with protective case connected with the hydraulic jack. The sliding apron has groove formed in lower part thereof and provided with pneumatic cylinder adapted to be filled with air when sliding apron enters coal slot.

EFFECT: prevention of apron gumming during mineral excavation, prevention of sliding apron damage, prevention of mineral inrush into mining face, creation of additional support zone for powered support.

3 dwg

FIELD: mining industry.

SUBSTANCE: ceiling has screen, inside of which in guides extending screen is mounted and hydro-jack for moving extending screen. Ceiling is provided with guiding beam rigidly fixed on screen and cylindrical groove, cut-in gear with possible movement along guiding beam and cylindrical guide positioned transversely to screen and also with possible removal from them. Cut-in gear has saw, mechanically connected to engine through reducer, on body of which ring fixing is rigidly mounted for cylindrical guide.

EFFECT: higher reliability.

2 cl, 3 dwg

The invention relates to mining, in particular to a method of controlling the roof in disturbed areas and can be used in the development of coal, potash and rock-salt formations mechanized complexes

Shield // 2235885
The invention relates to mining and can be used in mechanized roof supports cleaning complexes and aggregates

The invention relates to mining by underground methods, namely, mechanized roof supports wastewater treatment systems and plants for the extraction of thin layers

Shield // 2215155
The invention relates to mining and can be used in mechanized mount Stopes in underground mining

FIELD: mining industry.

SUBSTANCE: ceiling has screen, inside of which in guides extending screen is mounted and hydro-jack for moving extending screen. Ceiling is provided with guiding beam rigidly fixed on screen and cylindrical groove, cut-in gear with possible movement along guiding beam and cylindrical guide positioned transversely to screen and also with possible removal from them. Cut-in gear has saw, mechanically connected to engine through reducer, on body of which ring fixing is rigidly mounted for cylindrical guide.

EFFECT: higher reliability.

2 cl, 3 dwg

FIELD: mining, particularly to develop coal, potassium and rock salt formations with mechanized mining complexes.

SUBSTANCE: powered support section covering comprises apron in which sliding apron supported by guiding means is installed and hydraulic jack for sliding apron movement. The sliding apron is covered with protective case connected with the hydraulic jack. The sliding apron has groove formed in lower part thereof and provided with pneumatic cylinder adapted to be filled with air when sliding apron enters coal slot.

EFFECT: prevention of apron gumming during mineral excavation, prevention of sliding apron damage, prevention of mineral inrush into mining face, creation of additional support zone for powered support.

3 dwg

FIELD: mining industry, namely, mechanized lining for supporting sloping drifts.

SUBSTANCE: frame has slides, beam, and hydraulically loaded posts included between slides and beam. Beam is divided in longitudinal direction on two beam elements. Each beam element is supported freely at least by one post, mounted on single slides.

EFFECT: soft roof pickup and prevented twist-causing loads.

12 cl, 3 dwg

FIELD: mining.

SUBSTANCE: powered support section comprises a base, a barrier element, a four-terminal network, a supporting element and hydraulic props. Hydraulic props are inclined towards a dump part of a long face. There are cutter wedges arranged on the supporting element of the powered support section along side edges of the supporting element upper section along its whole length. Cutter wedges are fixed to the upper plane of the supporting element. Each cutter wedge is a triangular pyramid. The top and the rib of this pyramid are arranged on the same axis with a hydraulic prop axis, and the base is arranged on the supporting element surface. The pyramid base is fixedly connected to a supporting element and represents an isosceles triangle, the top of which is arranged in the bottom part of the long face, and the base is located in the dump part of the long face.

EFFECT: improved safety of mining.

4 dwg

FIELD: mining.

SUBSTANCE: shearing shield of powered roof support section includes hydraulic cylinder, cleavers with wedge-like crack-formers and wedge-like dividers. Note that crack-formers and dividers are arranged in perpendicular plains and have stepped shape and their cutting edges are blunted.

EFFECT: decrease of regrinding, decrease of energy output of coal destruction and other rocks and exclusion of boulders output.

4 dwg

FIELD: mining.

SUBSTANCE: shield covering includes cover plate 2, receiving devices 4 for connection of heads of hydraulic cylinders with shield covering and support structure 3 welded under cover plate 2 and having multiple longitudinal cross beams. Besides, at least two longitudinal cross beams consist of H-section beams 10 with upper flange 12 of section, lower flange 11 of section and intermediate flange 13 passing perpendicular to two above mentioned flanges of the section, and distance between upper and lower flanges of section decreases at least on some part of length of H-section beam.

EFFECT: higher bending strength of shield covering and reduction of metal consumption of the design.

20 cl, 14 dwg

FIELD: mechanisms.

SUBSTANCE: invention relates to powered support elements position monitoring devices. Disclosed is face support cantilever beam (10) turning position determination method, which by means of, at least, one hydraulic cylinder (14) can be turned about axis relative to face support cap (12) between retracted position and extended position, characterized by fact, that determining pressure in hydraulic cylinder annular space (24) and/or in piston space (26) and depending on determined pressure making conclusion on turning position.

EFFECT: technical result is providing accuracy of cantilever support turning position determining without need for arrangement of necessary components in face support potentially hazardous zone.

11 cl, 4 dwg

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