ineral freed by means not involving slitting (E21C27/20)

E   Fixed constructions(158735)
E21C     ining or quarrying(17294)
E21C27/20                     ineral freed by means not involving slitting(48)

Roof supports for longwall mining // 2544345
FIELD: mining.SUBSTANCE: invention relates to mining, namely to sections of powered supports. The invention proposes a roof support of the main entry, which has two spaced sides, each of which includes a rear base interacting with soil, a hydraulically controlled rear support column connected to the above rear base, a rear shield, a rear connection that attaches the above rear shield in a hinged way to the above said rear base interacting with soil, a middle base interacting with soil and connected to the above said rear base, a hydraulically controlled middle support column connected to the above said middle base, the front base interacting with soil and connected to the above said middle base, and a hydraulically controlled front support column connected to the above said front base. Besides, the roof support includes a rear beam interacting with the roof and hinged to the rear shield, a middle beam interacting with the roof and hinged to the above said rear beam, and the front beam interacting with the roof and hinged to the middle beam interacting with the roof. With that, the above said rear support columns are connected between the above said rear bases and the specified rear beam; the above said middle support columns are connected between the above said middle bases and the above said middle beam, and the above said front support columns are connected between the above said front bases and the above said front beam. A rear connection strip is hinged to each of the above said rear bases interacting with soil; a middle connection strip is hinged to each of the above said middle bases interacting with soil, and the front connection strip is hinged to each of the above said front bases interacting with soil.EFFECT: improvement of operation of a powered support, namely improvement of stability and provision of constant contact to roof of mining under conditions of variation of mining area relief.9 cl, 17 dwg

Tunnelling exploding-loading complex // 2451792
FIELD: mining.SUBSTANCE: complex comprises a receiving wedge part with a loading module, a hopper for exploding and loading, an unloading scraper part, a self-movement mechanism, a pump station, a control panel, a hydraulic manipulator with a drilling machine on a portal trolley moving along a loader column, a safety support moving along guides at hopper boards with the help of sliding carriages. At the same time the inner part of guides at boards of the hopper for exploding and loading is arranged in the form of a geared rack, and wheels of sliding carriages of the safety support - in the form of geared wheels moving along the rack, besides, movement to geared wheels is transferred from electric drives installed inside sliding carriages, and their supply is provided by electric cables wound onto drums installed in a tail part of the hopper for exploding and loading and having a mechanism of automatic winding making it possible to pull a cable from a drum as sliding carriages move along the hopper to the bottomhole, and to wind the cable back onto the drum as sliding carriages move away from the bottomhole.EFFECT: improved design of a tunnelling exploding-loading complex, reduced labour intensiveness and higher efficiency of tunnelling works.5 dwg

Tunnelling exploding-loading complex // 2451791
FIELD: mining.SUBSTANCE: invention relates to mining. A complex comprises a receiving wedge part with a loading module, a hopper for exploding and loading, an unloading scraper part, a self-movement mechanism, a pump station, a control panel, a hydraulic manipulator with a drilling machine on a portal trolley moving along a loader column, a safety support made of safety shields and stands, moving along guides at hopper boards with the help of sliding carriages. At the same time safety shields have two sections, the front section is hingedly attached to the rear section, and is made as capable of turning down by means of two hydraulic cylinders, arranged under safety shields, at the same time the front section is lowered before blasting and lifted afterwards from a panel of complex control.EFFECT: improved design of a tunnelling exploding-loading complex.4 dwg

Cutter-loader // 2415264
FIELD: mining.SUBSTANCE: cutter-loader includes housing with skis and electric motor with hydraulic pump, which is arranged in it, cutter-loader supply mechanism along the working face, carriage with possibility of longitudinal movement relative to the cutter-loader housing owing to telescopic hydraulic cylinder, retaining device of the carriage and shaft with brake device and shaft rotation hydraulic cylinder. Double-arm revolving gear with screw and its drive is fixed on the shaft end. Mechanism allowing to perform rotational movements relative to longitudinal axis of that part of the arm where the screw with drive is located is built into the arm of the revolving gear, on which screw with drive is located.EFFECT: enlarging functional capabilities of cutter-loader and improving its use efficiency.3 dwg

ethod for tunneling machine fixation in predetermined location // 2276728
FIELD: coal industry, particularly development machines for hydromines.SUBSTANCE: method involves performing preparation drilling operations along with well flushing in mine ground with the use of several hollow rods provided with cutting crowns; anchoring tunneling machines by fastening thereof to well walls with the use of spring-piston mechanisms provided with anchoring means and connected to hollow rods so that tunneling machine fastening is carried out without rod removal from wells; cutting new ledge after hollow rod removal from well; fixing anchoring member during ledge cutting after hollow rod removal by applying tension to hollow rod in the absence of water pressure in it. Anchoring member is detached from well wall by moving rod to face simultaneously with supplying pressurized water to the rod before hollow rod removal. Spring-piston mechanism acts on anchoring member in direction transversal to well wall. Then the rod is removed from well and the tunneling machine is moved for distance equal to ledge width and tunneling machine fixation operations are repeated.EFFECT: increased reliability of temporary tunneling machine anchoring during excavation operation performing.6 dwg

ountain harvester // 2243378
The invention relates to mining equipment

The executive body of the mountain harvester // 2209975
The invention relates to mining machines, more particularly to a mountain harvesters working in the quarries at Tonkolili the development of rocks screw Executive bodies, arranged horizontally under the frame of the harvester and loaded part of the weight of the harvester

Heading-shearer // 2186213
The invention relates to mining technique, namely, drilling machines, intended for carrying out horizontal and inclined mine workings

Complex for sinking mines // 2151297
The invention relates to equipment for the coal mining industry and construction, in particular for carrying out horizontal and inclined workings
 
2550908.
Up!