Stabilisation system for mining machine
SUBSTANCE: group of inventions relates to mining equipment, in particularly to machines of continuous action. The method for the mining machine stabilisation relative to the first surface of the excavation and the second surface excavation comprises the extension of the first actuator to the first surface of the excavation before reaching a predetermined value by at least one indicator of the force between the first actuator and the first surface of the excavation, the retraction of the first actuator to the first predetermined distance, the first extension of the actuator to the first predetermined distance plus the offset distance, the second extension of the actuator to the second surface of the excavation before reaching a predetermined value of at least one indicator of the force between the second actuator and a second surface of the mountain Mining machine for the method's implementation.
EFFECT: invention provides the implementation of maximum opportunities for creating the lining and optimal leveling.
25 cl, 21 dwg
SUBSTANCE: invention relates to heading blast digger with safety lining. It comprises intake wedge part with loading module, bin for blast loading, unloading scraper part, self-propulsor, pump station, control board, hydraulic manipulator with drill rig at gantry car displacing over stage loader support. Note here that tail part of blast loading bin accommodates lining placer consisting of two props equipped with mount fork shaped in a definite way. Note here that said shape allows accommodation of fasteners composed of top and bottom sheets of metallic gauze reinforcements and top and bottom sheets of metallic strip grabs shifted relative to each other. Note also that said forks are connected by crosswise bar and arranged to be displaced relative to said props up and down by hydraulic cylinders. Said forks are lifted and lowered by control board.
EFFECT: mechanised walling system.
SUBSTANCE: tunnelling machine includes a frame with caterpillar trucks, a tray, an actuating element with a telescope, a conveyor, a buffer device, and a control panel, which are fixed on it. With that, the machine frame is provided with a telescopic pushing device with a power cylinder and a buffer with a support cylinder and brackets for fixation of support beams with holes for anchor bolts and an installation place of anchor posts into the mine working roof. Extension value of an extensible part of the pushing device is divisible by the value of telescope of the actuating element and mine working support pitch. The control panel of the telescopic pushing device is combined with the machine control panel and interconnected with the machine operation. Besides, the machine buffer devices can be equipped with a telescopic part and combined along the machine frame axis in the pusher housing with an axial partition wall. The telescopic pushing device can be made in the form of telescopic cylinders using support beams with holes for anchoring to mine working ground, thus compensating the divergence of planes in support places of the machine caterpillar trucks and its support beams to the mine working ground.
EFFECT: enlarging scope of application of tunnelling machines with caterpillar movement as to inclination angles of the mine working; improving operating reliability of the machine and its mobility and compactness.
9 cl, 4 dwg
FIELD: oil and gas industry.
SUBSTANCE: heading set of equipment includes heading machine with actuator device fixed at it by timberer with hold-down beam and spacing cylinders. Turning shaft at hold-down beam is equipped with turning mechanism at the machine conveyor. Manipulators are equipped with drilling and anchoring tools with permanent anchorage. Hold-down beam is equipped with sliding telescopes; manipulators with permanent fixtures are fixed at sliding telescopes of the hold-down beam. Turning shaft is made as load lifting telescopic boom with lifting and spacing cylinders. Hold-down beam at carry does not protrude beyond machine dimensions.
EFFECT: improving reliability of timberer, reducing errors at erection of permanent anchorage, increasing mobility and expanding scope of application both with minimum and maximum draft size.
5 cl, 3 dwg
SUBSTANCE: method includes the following stages. Installation of a structure inside or tightly with an underground mine, so that the structure provides for reactive forces when pushing a cutting head in direction of the material by means of a series of rigid materials fixed on the structure, which i arranged so that series of rigid elements may be fixed to it simultaneously at least in two directions, so that parts of tunnel branches could be formed in at least two appropriate directions, of the underground mine designed for transportation of people, mechanisms and extracted material. Formation of multiple parts of tunnel branches entering the material. Formation of the first part of the tunnel branch with the help of a cutting head and a series of rigid elements in the first direction, and afterwards formation of the second part of the tunnel branch in the second direction. During formation of the second part of the tunnel branch, movement of rigid elements from the part of the first tunnel into the part of the second tunnel branch for extension of the series of rigid elements in the part of the second tunnel branch.
EFFECT: application of the method considerably reduces costs, makes it possible to considerably increase speed of tunnelling and increases efficiency of production.
21 cl, 10 dwg
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.
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.
SUBSTANCE: The invention relates to mining, in particular, to sinking machine for excavation. The sinking machine comprises a hull, a working element, running gear, and a chain-linked conveyor. The hull is assembled from two parts with a ball joint hydraulic connection and jack-supported by blocks o tank and vehicle wheels. Each block has its own hydraulic drive. The working element comprises four rotors, two on large carrier and two on small carrier. The rotors rotate in different directions and are fitted with blades or roller bits. The rotor of one carrier rotate in one direction while the rotor of the second carrier rotation in the opposite direction, their rotation axis is inclined in different directions to ensure twisting in, like a corkscrew, into the working face during continuous feeding controlled by synchrodrives. The sinking machine can be fitted with manipulators with perforation drills. The form the arch shape of the bottomhole the large carrier rotors can move back and forth along the carrier sleeves using hydrocylinders controlled by tracers and verge millers.
EFFECT: increased productivity and excavation speed.
FIELD: engines and pumps.
SUBSTANCE: drive device for rotary tool, which operates with oscillation loading, has drive housing, load-carrying sleeve installed with possibility of being rotated in drive housing, drive shaft installed with possibility of being rotated in load-carrying sleeve, carrier of the tool for receiving processing tools, and oscillation excitation device for creating oscillation loading of carrier of the tool. Oscillation excitation device for each carrier of the tool has at least two intermediate shafts which by means of eccentric parts are attached to carriers of the tools and made with possibility of synchronous actuation.
EFFECT: improving support and sealing of drive shaft and load-carrying sleeve, increasing service life of drive devices.
25 cl, 21 dwg
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.
FIELD: mining industry.
SUBSTANCE: method includes directing breaking hits along layer structure of salt massif. For this executing tool of machine is provided with necessary number of chisels, directed along layer structure of salt massif, chisels are rigidly held in parallel to layers and direction of hit is changes concurrently for all chisels by rotation of machine, reciprocal movement is applied to chisels in the way to make breaking hits in direction of salt massif along layer structure. Due to destruction of salt massif in direction of layer structure, above-lying pieces are broken off, and in a way to minimally damage layers themselves, and break off large pieces of massif without over-pulverization of ore.
EFFECT: higher speed of operation, higher efficiency.
SUBSTANCE: hydraulic support with variable resistance and energy recovery includes a hydraulic prop with a safety valve and a hydraulic lock connected to its piston cavity, and a hydraulic control unit. Between the piston cavity of the hydraulic prop and a pressure line there installed is a multiplying gear consisting of a housing, big and small pistons rigidly attached to each other with a stock, chambers of big and small pistons and an intermediate chamber located between them. Besides, the device includes an adjustable throttle and two check valves, which are installed between the multiplying gear and the pressure line. The chamber of the large piston of the multiplying gear is connected to the pressure line through two parallel lines, in one of which an adjustable throttle and a check valve is installed in series, and in the other line a check valve is installed. The chamber of the small piston of the multiplying gear is connected to the piston cavity of the hydraulic prop, and the intermediate chamber of the multiplying gear is connected to atmosphere through a compensation opening.
EFFECT: improved operating reliability and accuracy of maintaining an operation mode of a hydraulic prop; cyclic transfer of hydraulic energy to the pressure line.
SUBSTANCE: hydraulically-assisted support with a throttling direction control valve and energy recovery includes a hydraulic prop with a safety valve and a hydraulic lock, which are connected to its piston cavity, and a control hydraulic unit connected to delivery and drain main lines. Between piston cavity of hydraulic prop and delivery main line there installed is a throttling direction control valve consisting of a body with three holes, large, average and small pistons rigidly attached to each other with a stock, as well as four chambers formed with the above pistons. Chamber of small piston is connected through the lower hole to piston cavity of hydraulic prop, and through the side hole made so that it overlaps the small piston to the delivery main line. Chamber of large piston is connected through the upper hole to the delivery main line, and upper and lower adjacent chambers of average piston are connected to each other with a check valve and a throttle, which are installed on average piston.
EFFECT: improving operating reliability and accuracy of maintaining an operation mode of a hydraulic prop; recovery of hydraulic energy to a delivery main line.
SUBSTANCE: section of movable shield during its extraction is squeezed from its neighbouring movable shield with the help of, at least, one expansion cylinder provided in the area of shield cap piece and, at least, one directing cylinder provided in the area of shield skid. Note that expansion and directing cylinders are loaded by reduced maximum pressure discharged from high-pressure line through proper pressure control valve. Note that pressure control valve contains valve casing with high pressure inlet (P), outlet for return (R) and outlet for reduced pressure (A) of fluid medium. Note that there is a measuring piston in valve casing that is loaded by adjustable spring force and having a pass hole closed by valve needle between outlet for reduced pressure (A) of fluid medium and outlet for return (R).
EFFECT: group of invention provides improved protection from neighbouring shields overturning in the course of shield section movement.
10 cl, 4 dwg
SUBSTANCE: valve device for control of powered support sections in underground workings contains distribution unit (10) with longitudinal holes (12, 14) that are connected to high pressure line and discharge line as well as several transverse holes (16, 18, 20), in which there are main control valves (F1-F18). Note that the first longitudinal hole (14) is a through-hole, on the both ends of which there is one pre-connected P1 and P2 element, connected to the high pressure provision system. The second longitudinal hole (12) is a through-hole, on the both ends of which there is one pre-connected R1 and R2 element, connected to the discharge line.
EFFECT: reduction of time for powered support sections control.
9 cl, 4 dwg
FIELD: machine building.
SUBSTANCE: protective profile for establishment of stiff connection to valve unit is equipped with mechanical fasteners. Besides, on its front side, the protective profile includes electric actuators, and control electronics, by means of which sections of face support are controlled on the right or on the left sides using electric actuators, is integrated. Protective profile includes at least one electric connector for connection to left section and adjacent right section of face support. At that, protective profile includes on its rear side built-in electric connectors provided with possibility of being connected to electric connectors of electromagnetic valves.
EFFECT: providing the control of several support sections on either side of control unit; easy erection and service of control device.
10 cl, 4 dwg
SUBSTANCE: system of valves for a powered support unit in underground mines comprises the first and second unblocked check valves, besides, the first check valve is connected with a drop cylinder of a support unit, and the second check valve is connected with a lifting cylinder of a support unit, besides, both check valves are connected with each other. At the same time the control input of the second check valve is connected with the input of the piston surface of the first check valve, and the discharge input of the second check valve is connected to the input of the circular surface of the first check valve.
EFFECT: making it possible to maintain pressure in a lifting hydraulic cylinder as a support unit moves.
6 cl, 3 dwg
SUBSTANCE: system of valves includes two controlled return valves the control line inlet of which is connected to the pressure line inlet of the other controlled return valve. Outlet of the first controlled return valve is connected through the first simple return valve located with possibility of being shutoff to two other in-series located simple return valves; at that, connection point between both other return valves is connected to the outlet of the second controlled return valve. Inlet of the first of other return valves is connected to the outlet of the second one of the other return valves.
EFFECT: improvement of system of valves, reducing the cost of the construction and simplifying the adjustment of system of valves.
9 cl, 2 dwg
FIELD: engines and pumps.
SUBSTANCE: arrangement of valves of support legs 10, 11 comprises two controlled check valves 24, 25 connected in parallel, one of them, 24, being connected on inlet side to return pipeline R and second one, 26, being connected on outlet side with outlet of piston A1 of leg 10. Note here that at least another one controlled check valve 22, 28 is used with its outlet side connected with outlet A' of leg 10 piston surface and its inlet being connected with return tube R or control contact of A2 of the valve. Combination of two support legs 10, 11 and pump cylinder 50 for arrangement above that comprises two stepped pistons fitted coaxially in common casing differs from known design in that each piston forms piston space and annular space, while casing has two annular outlets communicated with piston surface outlet of appropriate leg.
EFFECT: higher reliability of operation.
11 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: valve actuating hydro-cylinder (10) contains at least one slide. The slide shuts off flow channel inside the valve. Flow channel (48, 50) does not run through slide (40) of the valve. The valve contains a connection (R) of a reverse line continuously connected with slide (40) of the valve. Slide (40) of the valve on both sides is coupled with the connection of the reverse line. There is also disclosed procedure of installation section of a powered roof support by means of the said valve.
EFFECT: increased reliability of commutation with reduction of forces effecting valve seat.
14 cl, 2 dwg
SUBSTANCE: feed line for connection of hydraulic powered support to hydraulic feed system routed along conveyor is equipped with feed connection connected on conveyor side to feed system and located at some distance from feed connection, powered support connection which is connected to feed connection through internal channel. Feed line includes cylindrical tube and piston device telescopically moving in it, and by means of them an internal channel changing throughout the length is formed.
EFFECT: improving feed lines for connection of powered support to feed system, decreasing loads for connections of powered support and hose.
15 cl, 7 dwg
SUBSTANCE: invention relates to mining industry and may be used in cleaning machines in underground mining of minerals. Cleaning machine for underground mining with machine body moving along mining face consists of at least one drum actuator, which, with the help of actuator boom, is connected to machine body and may be driven by drive arranged in machine body via transmission gear arranged in actuator boom. Transmission gear has compensating cardan shaft passing through boom, which at the machine body side may be connected or engaged with the help of the first stage in angle drive to drive, and at the side of drum actuator with the help of the second stage in angle drive to the drum actuator itself.
EFFECT: reduction of load at side surfaces of shaft wheel cogs, reduction of power losses in transmission gear in actuator boom, lower wear of drive system and transmission gear parts, possibility to install boom for various cleaning machines.
11 cl, 5 dwg