FIELD: process engineering.
SUBSTANCE: invention relates to continuous-operation headers. Header cutter comprises support element, extensible cutting head arranged at support element front end with central main part and at least one extensible drum part arranged at butting head end outside in axial direction from said cutting head main part. Extensible drum part has axial inner end abutting on cutting head main part. Axial outer end comprises inner end structure secured to cutting head main part and outer cylinder secured thereto. Inner cylinder secured to said inner end structure is located inside outer cylinder and aligned therewith. Extensible cylinder has inner circular expanded end with the part located between said inner and outer cylinders. End cover has ledge accommodating inner cylinder outer end aligned therewith. First and second spaces are formed between said cylinders. When fluid flows through said spaces extensible cylinder displaces to pulled or pushed position.
EFFECT: drum part that features extension and locking forces higher than those in usual cutting heads.
3 cl, 6 dwg
The technical FIELD
This invention relates to an electric machine with continuous action and, more specifically, to an electric machine with continuous action, containing the drum element with an extension end parts. This invention is directed to a tool extension, retraction and retention of the extension cord reel electric machine in its extended position.
BACKGROUND of the INVENTION
Device : continuous development of the field whose type contemplated in this invention, the cutting head can be used to separate the material from the reservoir field with the establishment of a corridor in the mine workings or space to which the device is moving and continues to further develop the field. The cutting head is mounted to rotate on a movable base with providing variations in the vertical plane between the roof framing and bedrock and contains a rotating drum located on a horizontal transverse axis and containing the teeth or cutting edges that separate breed and displace it. This device also contains the usual boot head which is used to collect the liberated breed on underlying rocks, develop and move it back inside and to the front in the direction of travel of the receiving parts of the TRANS is ortherwise means of this device. The rotating drum has end portions that can be selectively extended or drawn respectively to separate breed from the edges and corners of the corridor development and reducing the effective length of the cutting head to provide clearance on the sides of the head.
As shown in figure 1, the electric machine is a continuous action, indicated generally by the number 10 position, can take various forms, however, for illustrative purposes, in this case, it comprises a base 14 on tracks, the support frame 16, on the front end which can be rotated installed going forward bracket or supporting element 18 located with the possibility to perform swing up and down between the roof and bedrock excavation. Elongated electric head 24 passes across the support element 18 and rotatably attached to its front end. Electric head or cutting head 24 mounted for rotation with the motor around its longitudinal axis X-X. On the front end of the frame 16 can be rotated are the normal boot head 26 going forward from this end of the frame beneath the supporting member 18 and containing performs oscillatory motion racking up the legs 28, which are designed for cooperation with developing the breed and move it n the ass and inside to the known transporting means 30 electric machine. To swing the support element 18 in a vertical plane about the axis of rotation and tilt the boot of the head 26 relative to the horizontal axis are the average hydraulic jacks (not shown).
Elongated electric head 24 is driven by a pair of motors 34. As shown, the motors 34 are located on the same axis at a distance from each other and are generally parallel to the node 24. The motors 34 are located respectively on opposite sides of the support element 18.
The drive motors 34 rotatably drives the shaft 36 of the cutting head, which runs parallel to the longitudinal axis of the head 24 with the accession is supported rotatably by a tubular extension 38 of the housing of the gear mechanism, which is also parallel to the longitudinal axis of the head. The gear drive mechanism for electric head may be such as shown in any of U.S. patent No. 3617093 and No. 3695725, or have other regular structure.
As described hereinafter, the shaft 36 rotatably drives the continuous hinge cutting chain 48 type endless circulating belt, hollow cylindrical rotary drum cutting head 50 and the extension portion 52 of these cutting heads, which contain cylindrical portion 66 and with the possibility of actiongo slip placed in the ends of the respective heads 50. Part 52 are selective extension of these end parts and retracting them hydraulically. The machine operator can selectively advance or retract the extension portion by means of a hydraulic control system.
Examples of conventional extension means reel cutting unit electric machine shown in U.S. patent No. 4489985 and No. 3516712.
In U.S. patent No. 4489985, as can be seen in figure 2 and 3, the shaft 36 of the head actuates the outer peripheral element 60 of the cutting head 24 by means of the drive ring 72, which is engaged with spaced around the periphery of the pins 74. The outer peripheral element 60 is supported on the extension 38 of the housing with a bearing 76 and other internal bearings (not shown).
The internal diameter of the extension end portions 52 of the hollow cylindrical rotating drum exceeds the outer diameter of the cutting head 60, and these parts 52 rotatably driven through the head 60. As shown in figure 2 and 3 spaced around the periphery of the pins 82 have inner ends permanently attached to the outer peripheral portion of the head 60. Accordingly, the head 60 actuates the front-end part 52 by means of pins 82 included in the connection with the corresponding one of the interacting keyed tongue is in element 52. The pins 82 and the keyways 84 spaced in the circumferential direction along the inner periphery of the cylinder 52. The above drive device that contains keys and the keyways, additionally enables the reciprocating axial movement of the end portions 52 relative to the cutting head 60 by axial sliding of the interaction that takes place, respectively, between the pins 82 and keyways 84.
The hydraulic cylinder 90 together with its piston rod 92 performs the extension end portions 52. The rod 92 is firmly attached to the plate 94 which is slidable mounted in the inner channel of the cylinder 66 of the end portion 52. Circular drive ring 96 fixed to the inner channel of the cylinder 66 to move with him. Drive ring 96 on the outer circular surface has openings 99 to the outer annular surfaces which accommodate bolts 98, one end of which is connected a threaded connection with the piston 94 to move with him, and the other end attached firmly screwed to release the latch element 100. Holes 99, located on the drive ring 96 have a diameter slightly greater than the diameter of the bolt 98, to provide sliding bolts 98 through them. Consequently, the piston I element 100 is moved in the form of a single node in the direction of the longitudinal axis X-X.
As best seen in figure 2, at least one blocking element 102 can be rotated installed on the mounting ring 104, which is firmly attached to the shaft 36 of the head with providing rotation together with him.
In U.S. patent No. 3516712 describes the electric machine with a sliding head having a spring return mechanism. Means for extension retractable head is a hydraulic cylinder. More specifically, as shown in figure 4, a shaft 87 that passes axially through electric head 13. End portion 70 electric head contains a retractable cylindrical part 71, slidable mounted on the shaft 87 by means of pins 88, located in the keyway groove 89. Sliding sleeve 90 is attached to the outer end of the shaft 87, and the mated inner cylinder 91 slidable connected with a sliding sleeve 90 with the creation of the sealing connection. The inner cylinder 91 via a shaft 87 passes the channel 92. The working fluid is fed through the channel 92 in the inner cylinder 91 to move the sliding of the cylindrical part 71 and the end portion 70 electric head toward the outside relative to the shaft 87.
Between the outer part 65 electric head and retractable cylindrical portion 71 is a coil spring 93. To the outer end 65 of the electric head is rtraline ring 94, adjacent to one end of the spring 93, and the inner end of the sliding cylindrical portion 71 is attached to the ring 95, adjacent to the other end of the spring 93. When the end portion 70 of the head in its extended position, as shown in figure 4, the spring 93 is compressed between the rings 94, 95, while the end portion 70 of the head is held in its retracted position, the working fluid medium located in the inner cylinder 91. Retraction of the end portion 70 of the head is accomplished by release of the working fluid from the inner cylinder 91, while the force of the spring 93 is located between the rings 94, 95, removes retractable cylindrical part along the shaft 87 in the outer part 65 electric head.
The purpose of this invention is to provide an extension drum parts, improved compared to the extension part, available in the above-described cutting heads. In conventional cutting heads of the forces, providing extension and blocking extension drum parts, sometimes inadequate, as a result, the machine operators have to weld an extension drum parts in their extended position. The purpose of this invention is to provide an extension of the drum part, in which the sliding force and the force of the block more than a normal cutting Golo the hands. More specifically, the efforts of the nominating and blocking in the proposed drum have values that are four times higher than the value of the efforts that are usual cutting heads.
The present invention offers an improved electric machine of continuous operation, which comprises an elongated housing portion, mounted on the means supporting the promotion of this part. To this hull is attached with the possibility of rotation of the supporting element, passing from her forward. On the front end of the support element mounted elongated electric head is located with the opportunity to drive rotation around its longitudinal axis. The head contains the extension drum parts made with the possibility of extending and retracting in the axial direction.
Extension reel part contains internal mechanical structure attached to the main body of the cutting head, and an outer cylinder attached to the inner end of the structure. Extension reel part also contains an inner cylinder attached to the inner end structure having an outer surface and located coaxially with the outer cylinder inside it, but at a distance from the specified outer cylinder. Extension reel part also contains deducing the second cylinder, which has an internal circular extended end and part of which is placed between the inner and outer cylinders. Between the inner end design and advanced end of the retractable cylinder formed by the first space. Extension reel part also contains an end cap having a protrusion, which is coaxial with it is the outer end of the inner cylinder, and between the specified protrusion of the end cap and the outer cylinder is specified, the extended end of the sliding cylinder. Between the inner cylinder and retractable cylinder and between the specified advanced end of the sliding cylinder and the specified protrusion of the end cap is formed of the second space, so that when fluid flows into the first space and out of the second space, the sliding cylinder is moved into the extended position, and when the working fluid flows into the second space, and exits the first space, the sliding cylinder is moved in stenothoe position.
BRIEF DESCRIPTION of DRAWINGS
Figure 1 depicts a partial top view of the electric machine.
Figure 2 depicts an enlarged view of the known main body of the transfer mechanism of the cutting head on which the locking mechanism shown in a locked position; and
Figure 3 depicts the HC is licheny view of half of the cutting head, shown in figure 2, in which the locking mechanism shown in the release position, and the strip is pulled in.
Figure 4 depicts a section of one end of the known cutting head.
Figure 5 depicts a cut one end of the cutting head in accordance with this invention, on which the drum extension portion shown in retracted.
6 depicts a cut one end of the cutting head in accordance with this invention, on which the drum extension portion is shown in its extended position.
DETAILED description of the INVENTION
Figure 5 and 6 shows the cutting part 200 electric machine in accordance with this invention, and if such elements are shown in figures 1 and 2, you should refer to these drawings.
The cutting part 200 electric machine includes a support element 18, an elongated cutting head 204 installed on the front in the direction of travel of the machine the end of the support element is rotatably driven by a motor around its longitudinal axis. Cutting head 204 includes a centrally located main portion 50 and at least one drum extension portion 208 located on the side of the head 204 in the axial direction and retractable in the outer direction from the main portion 50 of the cutting head. Extension portion 208 is configured to move in the axial is upravlenii along the longitudinal axis of venutolo position into the extended position relative to the main portion 50 of the cutting head. More specifically, the extension portion 208 includes an annular hydraulic cylinder, which is designed to selectively extending and retracting the extension portion 208.
Extension portion 208 has an axial inner end located adjacent to the main part 50 of the cutting head, and an axial outer end, with an extension portion 208 has an internal mechanical structure 212 that is attached to the main body 50 of the cutting head. Extension portion 208 also includes an outer cylinder 216 attached to the inner end structure 212, and the inner cylinder 220, also attached to the inner end structure 212. The inner cylinder 220 also has an outer surface 224 that is located coaxially with the outer cylinder 216 and placed in the cylinder 216, but is located at a distance from him. The inner cylinder 220 is also configured to attach (not shown) to the outer cutting head 60, and the cylinder 66, as shown in figure 2 and 3.
Extension portion 208 also includes a retractable cylinder 228 and the end cap 230. Retractable cylinder 228 has an inner circular extended end 232, with retractable cylinder 228 is placed between the inner cylinder 220 and the outer cylinder 216. Advanced end 232 includes seals and bearings providing for movement of the sliding wydajno what about the cylinder 228 between the inner and outer cylinders. Between the inner end structure 212 and the advanced end 232 retractable cylinder 228 is limited to the first space 218.
End cover 230 is passing through the axis of the protrusion 236 in which is coaxially outer end of the inner cylinder 220, and an extended end 232 retractable cylinder placed between the lip 236 of the end cap and the outer cylinder 216. The protrusion 236 contains the seals and bearings, providing for sliding movement of a sliding cylinder 228 between the protrusion 236 and the outer cylinder 216. Between the inner cylinder 220 and retractable cylinder 228 and between the enlarged end 232 of the sliding cylinder and the protrusion 236 of the end cap is limited to the second space 240, so that when fluid flows into the first space 218 and exits from the second space 240, the retractable cylinder 228 is moved into the extended position, and when the working fluid flows into the second space 240 and exits the first space 218, retractable cylinder 228 is moved in stenothoe position.
The inner cylinder 220 is providing the extension channel 244 passing through the inner cylinder 220 and communicated with the first space 218, and providing retraction of the channel 248, passing through the inner cylinder 220 and communicated with the second space 240. The normal location of the channels not shown) through an elongated cutting head 204 provides selective admission of fluid under pressure into the channels 244 or 248 for extending or retracting the extension portion 208.
Various other properties of the present invention set forth in the following claims.
1. The cutter electric machine that contains
extendable cutting head mounted on the front end of the support element with the possibility of driving the rotation around the longitudinal axis and containing
centrally located to the main part and
at least one extension reel part located at the end of the cutting head outside in the axial direction from the specified main part of the cutting head and arranged to move in the axial direction along a specified longitudinal axis of venutolo position into the extended position relative to the specified main part of the cutting head, with the specified extension drum part has an axial inner end located adjacent to the main part of the cutting head, and an axial outer end and contains
internal mechanical structure attached to the main body of the cutting head,
the outer cylinder attached to the said inner end design
the inner cylinder attached to the specified internal mechanical structure having an outer surface and located coaxially with the outer cylinder inside it, but at a distance from the specified outer cylinder
wydajno the cylinder, which has an internal circular extended end and part of which is placed between the inner and outer cylinders, so that between the inner end design and advanced end of the retractable cylinder formed by the first space, and
the end cap having a protrusion, which is coaxial with it is the outer end of the inner cylinder, and between the specified protrusion of the end cap and the outer cylinder is specified, the extended end of the sliding cylinder, and between the inner cylinder and retractable cylinder and between the specified advanced end of the sliding cylinder and the specified protrusion of the end cap is formed of the second space, so that when fluid flows into the first space and out of the second space, the sliding cylinder is moved into the extended position, and when the working fluid flows into the second space, and exits the first space, the sliding cylinder is moved in stenothoe position.
2. The saw device according to claim 1, in which the inner cylinder is providing the extension channel passing through the specified cylinder and communicated with the first space.
3. The saw device according to claim 1, in which the inner cylinder is providing retraction of the channel passing through the specified cylinder and reported what about the second space.
FIELD: oil and gas industry.
SUBSTANCE: heading machine contains actuating device, support lifter, caged platform, electric equipment, control post, feeding mechanism, conveyor and chassis. In pivot mechanism located at chassis and driven by swing hydraulic cylinders spherical roller bearing is installed at bearing axis inside two-sided plain thrust bearing. Plain thrust bearing consists of assemblies (two at each side) segments in circumferential direction; segments are made of wear-resisting steel and are fixed by sunk screws.
EFFECT: decrease in dimensions and increase in service life of heading machine.
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 involves uniform destruction of rock mass with continuous cross cutters of cycloidal direction with working tool of planetary flat disc actuators and of tangential direction with working tool of rotary elements. The latter are installed behind front and rear parts of the disc and fixed on reduction gears of planetary flat disc destruction elements.
EFFECT: increasing rock mass destruction efficiency using cross cutters.
2 cl, 3 dwg
SUBSTANCE: method is implemented due to destructing the working face with cross cutters using rotary and planetary disc working members with lower power consumptions and yield of small ore fractions. In order to improve the efficiency of cross cutters, rock-destructing tool of planetary disc members moves in cycloidal-radial directions.
EFFECT: higher efficiency of destructing processes of mine rocks using heading-and-winning machines with cross cutters.
2 cl, 2 dwg
SUBSTANCE: tunnelling machine actuator comprises a boom, a dispensing reducer and two breaking-loading crowns, axes of which are parallel to the longitudinal axis of the boom, the direction of their rotation is mutually opposite, and the body of each breaking-loading crowns is arranged in the form of a truncated conical surface combining a smaller base at the side of the bottomhole with a larger base at the side of the dispensing reducer. On the outer surfaces of bodies of breaking-loading crowns there are trihedral prisms installed with disc tools as capable of covering trajectories of movement and reversing rotation directions.
EFFECT: higher efficiency of mine tunnelling by combination of breaking, grinding and loading processes in a tunnelling actuator.
6 cl, 11 dwg
SUBSTANCE: mining tunnelling combine comprises a displacement mechanism and a boom or a frame. On the frame there are at least two rotary cutting heads and two cutting rollers. Axes of cutting heads rotation pass in direction of tunnelling or are arranged at the sharp angle relative to tunnelling direction. Two cutting rollers are installed in parallel and behind the cutting heads, and may be arranged on the foot and on the roof, accordingly. Both cutting rollers comprise end sections capable of sliding to the profile width to form a substantially rectangular profile of cutting. At the same time each cutting roller is separately hingedly connected with the boom or the frame with the possibility of height adjustment, and each cutting roller has a diameter corresponding to at least one fifth of diameter of cutting heads cutting.
EFFECT: formation of a rectangular profile of a tunnel by a mining machine, exclusion of operation to remove curved profiles, higher safety.
5 cl, 5 dwg
SUBSTANCE: The invention relates to mining, in particular, to design of operating element of a mining machine. The operating element of mining machine for coal extraction in formations with hard inclusions comprises a revolving gear and a cutting section installed on rotatable output gear shaft. A power transmission which rotates the output gear shaft of this revolving gear is installed inside the frame of revolving gear. The cutting section receives power pulses from unbalanced vibrator positioned inside of it. The cutting section is kinematically connected by coaxially positioned outer and inner torsion bars with output gear shaft and unbalanced vibrator respectively. The unbalanced vibrator is actuated through inner torsion bar. There is an additional transmission installed inside the frame of the revolving gear, which is positioned in parallel with the power transmission or the output gear shaft. This additional transmission rotates the inner torsion bar relaying the rotation to the unbalanced vibrator.
EFFECT: reduced size of operating element while retaining efficiency of extracting thin coal layers with hard inclusions.
5 cl, 4 dwg
SUBSTANCE: mining tunnelling combine comprises a frame equipped with a travelling mechanism, a boom that carries cutting facilities and a traction facility that passes in the longitudinal direction of the combine behind the back end of the frame. Cutting facilities are formed by at least two rotary cutting heads having axes of rotation passing in direction of tunnelling or arranged at the sharp angle to the tunnelling direction. The mining tunnelling combine also comprises a block suitable for towing behind the frame, having a transverse passage for the traction facility and hingedly connected to the frame by means of blocks of hydraulic piston cylinders. The block comprises at least one boring and setting device for anchors and at least one support device fixed on the roof and foot, each at both sides of the traction facility. On the block there is also a control device connected to the drive of the travelling mechanism and/or drives of cutting facilities and with hydraulic control of blocks of hydraulic piston cylinders, so that blocks switch to free-flow or floating position during combine tunnelling.
EFFECT: invention provides for installation of anchors most closely to the face with simultaneous continuation of boring process.
10 cl, 3 dwg
SUBSTANCE: tunnelling machine includes movable frame having the front end section, multiple rotor assemblies containing many working members with rotor cutter, which are located at some distance from each other in the front end section of movable frame, assembly of cutter drum, which is located in the front of the front end section and contains rotation axis located across the section of the front end of movable frame, section of the first end drum, section of the second end drum and section of middle drum. Section of the first end drum includes the following: the first shaft passing along rotation axis and including the first channel passing along rotation axis; the first end drum attached to the first shaft; extension piece of the first end drum, which is located coaxially around rotation axis; the first piston located in the first channel with possibility of rotation relative to it, which is fixed relative to extension piece of the first end drum and offset along rotation axis between extended configuration of extension piece of the first end drum and retracted configuration of extension piece of the first end drum; the first coupling sleeve transmitting the torque moment between the first end drum and extension piece of the first end drum. Section of the second end drum includes the following: the second shaft passing along rotation axis and located at some distance along rotation axis from the first shaft and including the second channel passing along rotation axis; the second end drum attached to the second shaft; extension piece of the second end drum, which is located coaxially around rotation axis; the second piston located in the second channel with possibility of being rotated relative to it, fixed relative to extension piece of the second end drum and offset along the rotation axis between extended configuration of extension piece of the second end drum and retracted configuration of extension piece of the second end drum; the second connecting sleeve transmitting the torque moment between the second end drum and extension piece of the second end drum. Section of middle drum is located concentrically to rotation axis and passes between the first and the second shafts.
EFFECT: development of extension piece of drum of lower layout of cutter drum, which is supported irrespective of the main drum for relative extension and retraction.
22 cl, 63 dwg
SUBSTANCE: escapement transportation facility intended for system of deposits development by flow-line method, comprising module conveyor sections, which are joined together to form conveyor chain. Escapement transportation facility comprises the main frame for support of back conveyor section of conveyor chain. The main frame has the first side, through which additional conveyor sections are added to conveyor chain, and the second side. Accumulating conveyor is installed on the main frame. Driving unit is intended for selective motion forward and backward retraction of conveyor chain. Besides escapement transportation facility comprises ceiling arranged over the main frame. Ceiling is installed at least on one cantilever support, passing upward as joint with the second main frame, so that the first side remains open for addition of additional conveyor sections to conveyor chain.
EFFECT: creation of escapement transportation facility used for development of deposits at relatively narrow benches.
11 cl, 10 dwg
FIELD: open-cast mining.
SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.
EFFECT: improved operating capabilities of device.
5 cl, 5 dwg
FIELD: mining machinery manufacturing, particularly machines which completely free the mineral from the seam.
SUBSTANCE: heading machine comprises executive tool including boom with body and cutting crown, as well as feeder with nose and rock raking device. Rock raking device is installed in lower boom part facing ground. Rock raking device is plate shaped as rectangular trapezoid. Minor trapezoid side is located at cutting edge, major one facing feeder nose. The plate is rigidly connected to shaft displaced towards minor trapezoid side. The shaft is installed in socket formed in lower boom part facing ground. The plate may rotate with respect to longitudinal shaft axis. Stops are formed on boom body from both sides of longitudinal boom body axis and spaced a distance providing plate rotation through α angle, wherein 30°≤α≤45°.
EFFECT: simplified structure and increased efficiency of machine loading near face.
FIELD: cutting-loading machines for explosion-free cutting of deposits having complex structures.
SUBSTANCE: mining machine comprises frame with movement mechanism, boom with cutting crown and loading device. Crown has rock-cutting tools. Loading device is made as inclined rotary hoisting table with gathering arms and central drag conveyor. Frame may rotate with loading device installed thereon and with unloading conveyer. Cutting crown may rotate about axis of rotation with respect to longitudinal boom axis through φ angle defined in dependence of rock hardness. Rock-cutting members are made as disc cutters reinforced by hard-alloyed pins and freely rotating in staggered order around replaceable pins.
EFFECT: increased operational efficiency due to extended field of practical usage thereof and increased service life of rock-cutting members.
FIELD: mining; apparatus for making tunnels in underground mining of minerals.
SUBSTANCE: machine includes undercarriage representing a frame whereon caterpillar trucks are attached and trunnion axes of a working head gearbox together with a rotary working head, loading buckets, berm mills, cutting drums, gathering blades, conveyer and protection cowl mounted on supports of said frame. Hydraulic lift cylinders of the working head gearbox are attached to this frame, rods of said cylinders are attached to the working head housing and all rotating parts of said rods are set into bearings equipped with a force lubrication system. The lubrication system includes pump, pressure pipeline, manifolds and system of distribution tubes leading to gear shaft bearings of the gearbox. The undercarriage frame has two tightly closed cavities, wherein a pressure line between the pump and manifolds is positioned being made in the form of coils. Both cavities of the frame are filled with cooling fluid.
EFFECT: cooling of lubricating fluid within the lubrication system; increasing the life of gear shaft bearings of the machine gearbox; decreasing the ambient air temperature; enhancement of working conditions for the operating staff.
FIELD: mining; apparatus for making arched tunnels in underground mining of minerals.
SUBSTANCE: machine includes frame whereon an undercarriage and working element drive gearbox are mounted together with a rotary working head being attached to output shafts of said gearbox. The working head consists of borer, pitching borer, cross element, each end of its arms having a loading bucket with a bottom and sidewalls, and conveyer. The front face bottoms of two loading buckets positioned on opposite arms of said cross element are slopped forward with respect to the machine displacement vector, and those of the other buckets - slopped backward with respect to the same vector.
EFFECT: cleaning-up with the full engagement of the bucket cross-section area; reduction of impact loads for the cross element; reduction of heating and increased wear of the bearings in the working head drive gearbox of the machine.
FIELD: engines and pumps.
SUBSTANCE: heading machine contains a frame supporting the running gear, an actuator reduction gear. A rotary actuator is fitted on the output shafts of the said reduction gear and consists of a cross-piece with four beams provided with loading scoops, the supplied loading ladles, a borer and starting borer, an electric equipment and hydraulic system. A space with volume not less than that of the bucket is arranged inside every rotary actuator cross-piece beam. All the said spaces communicate, via inlets and outlets, by means of a system of pipes, the inlets and outlets incorporating shut-off valves. The spaces of two adjacent cross-piece beams are filled with high-density a liquid. Note also, that an independent pump with a position pickup is built in the space of every beam, the said pickup being coupled with the cross-piece beam inlet and outlet shut-off valves.
EFFECT: automatic balancing of the rotary actuator cross-piece and ruling out its deviation from rectilinear movement.
SUBSTANCE: facility for milling and/or drilling rock or similar materials consists of spindle drum assembled on support and intended to rotate around axis; several rotating cutter spindles are installed in drum eccentric to axis of drum. On their ends projecting out of the spindle drum the cutter spindles bear working tools. At least two of cutter spindles are actuated from a common reducing drive, which has driven tooth gears stationary arranged on the cutter spindles and a common drive element interacting with driven tooth gears. Also the drive element and the spindle drum are assembled so as to provide their rotation relative to each other.
EFFECT: processing hard materials at high efficiency of milling, increased operation life of tools, high operational reliability and compactness.
55 cl, 22 dwg
SUBSTANCE: invention is related to mining industry and may be used for performance of assembly works in mine openings. Actuator of mining machine comprises boom with crown arranged in it, reducer, reducer drive, mount platform arranged on two front levers and two back levers made in the form of hydraulic cylinders. At the same time levers and their fixation elements make a parallelogram mechanism, device for lifting and moving of mount platform. Device for lifting and moving of mount platform is arranged in the form of one lifting hydraulic cylinder, which is hingedly joined to mount platform, coaxially to hinged joints of front levers connection to mount platform. At the same time lifting hydraulic cylinder is installed at the sharp angle relative to horizontal plane of reducer and is hingedly joined to reducer in zone of back levers connection to mount platform with making of arm relative to hinged joint of front levers installed on reducer.
EFFECT: wider field of mount platform application in various designs of mining machine actuators, and also simplified design of mining machine actuator.
SUBSTANCE: invention is related to mining industry and may be used in boring-shearing combines for rock breaking with cutting tool. Method for breaking of massif with cross cuts of certain depth made with rotor and planetary-disk actuators. When using combined breaking element: cuts of planetary-disk actuator are arranged in radial direction, and cuts of rotor actuator in tangential one in the form of concentric circumferences. At the same time depth of rotor element cuts is equal to depth of planetary element cuts in the areas of cuts crossing.
EFFECT: reduced power inputs and yield of fine rock fractions in process of massif breaking with combine actuators.
2 cl, 4 dwg
SUBSTANCE: invention refers to mining industry, namely to driving shields, and may be used during building of highway, railway and public tunnels. Operating member of driving shield includes centre rotor working organ in the form of faceplate, working organs with rock-breaking tools on outer surface for creation of oval form of tunnel section, actuating device of working organs and traveling mechanism. In order to create oval form of tunnel section, working organs are designed as two side and two vertical working organs of drum-type. Each side working organ is designed in the form of body of revolution arranged in relation to cross centroidal principal axis of tunnel section, with bow-shaped element corresponding to arch, half of side arches and perimetres of their connection. End surfaces of vertical working organs of drum-type correspond to arch and floor arch of tunnel. Central working organ is installed by means of bearing on axis located in centre of gravity of driving shield, this axis is also operating member guide. At that side working organs and vertical working organs are installed by means of bearings on their axes rigidly cantilever connected to guide. At that each of mentioned working organs is provided with actuating device, and traveling mechanism is designed in the form of hydraulic jacks.
EFFECT: providing of driving of tunnel of optimal oval shape transverse and establishing of conditions for maximum mechanisation and automation of all operating processes during tunnel building.