Drag scraper machine
SUBSTANCE: machine comprises a scraper of box type (1), a scraper hoist (2), head (3) and tail (4) traction ropes, diverting blocks (5) for traction ropes, a loading ramp (6). The scraper comprises side walls (7) and a rear wall (8), in its lower part inclined at the angle to the horizon. On the rear inclined wall of the scraper at the angle (10) of fixation of a tail traction rope to the scraper on brackets (11, 12) fixed on the walls a shaft (14) of cylindrical shape is installed with the possibility of rotation on the horizontal axis (13), and its lower edge is arranged with displacement downwards relatively to the lower edge of the rear wall of the scraper and is distanced from it along the horizontal line towards the tail traction rope. Brackets on the rear wall are fixed with the help of a board (15) with the possibility of its displacement in the vertical plane along the wall and fixation on it with the help of fastening elements (16). The shaft axis is installed in horizontally aligned slots (17) of brackets with the possibility of their displacement and fixation.
EFFECT: decreased energy intensity and wear of a device.
The invention relates to transport machines of periodic action, namely the scraper settings, mainly with the box scraper type, and can be used for transportation of ore from the faces in underground mining and stacking warehouses surface complexes coal mines.
Famous adopted for the prototype cable-scraper installation comprising a scraper box type, scraper winch, head and tail traction ropes, deflecting blocks for ropes and unloading shelves (Tarasov UD, Nikolaev, A. Mining machine of periodic action. SPb., Transport (TU), 2005, p.6-9, figure 2, 3A).
However, it is widely used in mining cable scraper apparatus have disadvantages such as high energy transportation of bulk cargo and intensive abrasive and fatigue wear of the scraper in the interaction of their lower edges with soil excavation and handling regiment.
The technical result of the invention is to reduce the energy intensity of the transportation of bulk cargo and reducing wear of the scraper by reducing the resistance to movement of the scraper when working and idle strokes.
The technical result is achieved by the fact that the scraper installation containing scraper amicin the type, scraper winch, head and tail traction ropes, deflecting blocks for ropes and unloading shelves, the rear inclined wall scraper under the attachment to the scraper tail traction rope fixed on the wall bracket is mounted for rotation on a horizontal axis, a roll of cylindrical shape, the lower edge of which is offset downward relative to the lower edge of the rear wall of the scraper and removed from it horizontally towards the tail of the traction rope, with the brackets on the rear wall of the scraper is fixed with a plate with the possibility of its displacement in the vertical plane and fixing with the fixing elements and the axis of the roll housed in a horizontally oriented slots of the brackets with the possibility of displacement and fixation of the axis.
The scraper installation is presented in figure 1, a side view, figure 2 is the side view of the scraper in the zone load, figure 3 is a view of the figure 2.
The scraper includes (1) box scraper type 1 scraper winch 2, head 3 and the tail 4 of the traction ropes, deflecting units 5 for traction rope, unloading shelves 6. This winch 2 can be double-drum or three-drum with one head and two tail ropes or two head and one tail rope. The scraper 1 is (f is Data2, 3) of the side wall 7 and rear wall 8, in its lower portion inclined at an angle α (the angle of introduction) to the horizon. The scraper 1 with traction ropes 3 and 4 is connected to the corresponding nodes 9 and 10. On the rear inclined wall 8 of the scraper under the node 10 of the attachment to the scraper tail pulling rope 4 mounted on the wall 8 of the brackets 11 and 12 is mounted for rotation on a horizontal axis 13 of the roller 14 has a cylindrical shape, the lower edge of which is located at offset h down relative to the lower edge of the rear wall 8 of the scraper and removed from it horizontally in the direction of the tail pulling rope 4 on the value ofand. While the brackets 11 and 12 on the rear wall 8 is fixed with a plate 15 with the possibility of its displacement in the vertical plane along the wall 8 and fixing it by means of fixing elements 16, and the axis 13 of the roll 14 is placed in a horizontally oriented slots 17 of the brackets 11 and 12 with the possibility of displacement and fixation axis 13. The parameters h,andaccepted depending on the geometric dimensions of the scraper and physico-mechanical properties of the transported goods and are determined experimentally or by testing of the prototype scraper while minimizing parameter h.
18 - bearing surface generation, 19 - subject to transportation of cargo in the loading area scrapers 20 - transported cargo, the var is returned by the scraper 1 during its working stroke, 21 - the direction of movement of loaded scrapers 1.
Technical solution can also be used for cable-scraper installations with scrapers Grabovogo type.
The scraper installation operates as follows. When you enable scraper winch 2 empty scraper 1, moving in the direction of 21 with the head of the traction rope 3 is filled located in the loading area lump cargo 19. By appropriate location of the rink 14 (parameters h andand) relative to the implement in the weight of the loaded cargo 19 of the lower edge of the rear wall 8 of the scraping force implementation is practically not reduced as compared with the calculated (parameter - the weight of the scraper, so as compactor 14 is beyond loaded in a scraper of the transported goods. After loading scraper 1 during its working stroke (Fig 1) its total resistance is determined by the force of friction of the movable scraper 1 cargo 20 weight G of soil production 18 when the coefficient of friction f and the rolling friction of the scraper weight G0when the ratio of the resistance movement w. At idle even though the 1 in the reverse direction after his release from the load 20 at the discharge shelf 6 resistance to movement of the scraper 1 is not determined when the coefficient of friction f0even though 1 of soil production 18 (what is characteristic is for the prototype), and when the weighted average value of the coefficient of resistance to the motion w as when working course loaded scraper 1, and the coefficient of friction f0taking into account the location of the center of gravity of the scraper 1 offset towards the rear wall 8.
When the ratio of the weight of the scraper and weight roaming of G0/G=0,5 (normative factor of 0.4-0.6), the coefficients of friction f and f0cargo and the scraping of soil production, respectively, equal to 0.7 and 0.5, and the coefficient of resistance to movement of the scraper in the direction of its bearing on the rink w=0.05 reduction in the energy intensity of transportation when working stroke will account for 23.7%and at idle - at least 50-60%. At the same baselines wear Foundation scraper will also decrease by 50-60%.
Thus, features of the invention can significantly reduce the energy intensity of the transportation of bulk cargo and wear scraping by reducing the resistance to movement of the scraper when working and idle strokes.
The scraper installation comprising a scraper box type, scraper winch, head and tail traction ropes, deflecting blocks for ropes and unloading shelves, characterized in that the rear inclined wall scraper under the attachment to the scraper tail traction rope fixed on this article is the NCA brackets is mounted for rotation on a horizontal axis, a roll of cylindrical shape, the lower edge of which is offset downward relative to the lower edge of the rear wall of the scraper and removed from it horizontally towards the tail of the traction rope, with the brackets on the rear wall of the scraper is fixed with a plate with the possibility of its displacement in the vertical plane and fixing with the fixing elements and the axis of the roll is placed in a horizontally oriented slots of the brackets with the possibility of displacement and fixation axis.
SUBSTANCE: method includes successive delivery of containers for transportation of mined rock to loading area, loading of mined rock into containers using loading device and transportation from drifting face. At that as a container for transportation of mined rock transport box is used, transportation of mentioned loaded containers is performed up in the air by monorail mounted in upper zone of drifting face.
EFFECT: improving efficiency and simplifying due to non-use of expensive equipment thus resulting in productivity gain.
7 cl, 2 ex, 3 dwg
FIELD: machine building.
SUBSTANCE: tow hitch is made in the form of rods, eyelets and two mutually perpendicular axles of different diameters, with a smaller diameter axle that passes through a hole in the large-diameter axle for rotation and is connected through the eyelet with a thrust, and the axle of diameter is inserted with a gap into eyelets of a stretcher section of the loading elevator.
EFFECT: free movement of the machine in three directions with respect to the loading elevator, simplified design, reduction of overall size and weight of the loading elevator.
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of planar chains of intermediate drives are arranged opposite to one another along width of draw member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the planar chain. The planar chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them. Magnets are secured on brackets of poles of the conveyer in gaps between pull chains of the planar chain and leaf chains of draw member of the intermediate drive with minimal gaps relative to the deck of the planar chain in the span between the driven sprocket and tightener of the intermediate drive.
EFFECT: increased reliability of operation of apron conveyer with extended length.
5 cl, 3 dwg
SUBSTANCE: in complex based on horizontally closed scraper chain a traction element is arranged as double-chain. Scrapers at side external relative to longitudinal axis of conveyor and at the length of contour equal to length L of the conveyor are arranged with stands perpendicularly aligned to scrapers in the form of beams with equal resistance in mutually perpendicular planes. Detachable cutters are fixed on stands, being aligned aside from conveyor longitudinal axis, besides, height of cutter cutting edges and their location along height from upper plane of scrapers are defined based on mathematical ratios. At the same time total height of cutting edges in all cutters is equal to capacity of mineral bed, and location of scrapers with cutters along conveyor length is accepted as stepped with pitch between cutters l=L/n with increasing height of cutters location on scrapers hi to the side opposite to direction of traction element movement. Besides, height b0 of cutting edge in lower cutter is selected on the condition of providing zone cleaning near bed foundation, and height b1 of cutting edge in the first cutter and height h of its location above upper plane of scraper are selected on the condition of providing strength of unit for fixation of stand with cutter to scraper. All scrapers equipped with cutters, at the side opposite to the cutters are equipped with additional vertically aligned stands of the same height, with the possibility of their interaction with vertical boards of panline both at weight-bearing and idle branches. Surfaces of additional stands at the side of panline boards are coated with a layer of antifriction material.
EFFECT: using scraper chain both as transportation device and a mining device.
FIELD: machine building.
SUBSTANCE: in disclosed here apron conveyer links of leaf chains of intermediate drives are arranged opposite to one another along width of pull member. These links are interconnected with "П"-shaped beams, on upper cross bars of which there are secured straps out of elastic material interacting with external surface of a deck of the leaf chain. The leaf chains of an upper branch of the pull member are arranged in spans between a driven sprocket and tightener; they interact with supports of sliding or with rollers. Also, cases of bearings of the driven sprocket and tightener and the said supports of the intermediate drive are mounted on the frame; the frame is secured to poles of the conveyer and can be set off in vertical plane relative to them.
EFFECT: increased reliability of operation of apron conveyer of extended length.
5 cl, 3 dwg
SUBSTANCE: facility consists of chute and auxiliary belt arranged under load bearing belt; said auxiliary belt has side edges projecting beyond borders of load bearing belt. Side edges of the auxiliary belt rest on horizontal damping rollers-supports at a section of load flow receipt; they rest on tilted re-loading rollers-supports at the section of re-loading. The facility is equipped with a frame with a vibrator; re-loading rollers-supports are rigidly fixed on the frame. By means of flexible elements the frame is installed on poles and can be vertically reinstalled.
EFFECT: reduced length and increased reliability.
2 cl, 4 dwg
SUBSTANCE: invention is related to mining industry, namely to charging devices for belt conveyors, intended for transportation of large-sized materials. Rotary-vane feeder of conveyor comprises drum, which consists of two rims joined to each other by means of radial blades, support rollers and tray, which are installed on frame. Besides support rollers are installed in pairs on balancing levers, which are hingedly joined to frame. Radial blades are equipped with breaking beams, which are arranged over blades and are connected to them by means of elastic elements.
EFFECT: increased reliability and durability due to reduction of contact tensions between rims and rollers and reduction of dynamic impact loads at blades.
SUBSTANCE: invention relates to device and method for travel of mining conveyor section between the first position, co-axial with content of conveyor sections, and the second position of storage, located not endwise the content of conveyor section. Device contains carrier of section and guide, which directs movement of section between the first and the second positions. Additionally device is implemented with ability of connection to manipulation device by composition of conveyor sections so that carrier of section at least partially moves independently of manipulation device. Carrier of section with ability of rotation is connected with guide by means of intermediate pivot pin and allows travel stabiliser. Also it is provided method of travel of mining conveyor section.
EFFECT: effectiveness increase of manipulations by sections of conveyor.
12 cl, 5 dwg
SUBSTANCE: it is intended for simultaneous work with the loading machine, boring plant or with timber-mounting mechanisms having the possibility of being moved along the rigid trough line of drag conveyor by means of chainless supply mechanism when performing mine openings by drill and fire method. Pickup mechanism includes drag conveyor with a rigid line, a wedge nose piece which is mounted on the front part of drag conveyor and which serves for penetrating into the mined rock dump and for protecting the transporting member of conveyor against straight blow when breaking up the work face by explosives, two enclosing shields, support plate located in the front part of drag conveyor, power spacer-feed mechanism and the end spacer mechanism. Support plate is made with the possibility of perpendicular movement and attachment thereof relative to longitudinal axis of drag conveyor by means of two T-shaped guide beams and slots of the rigidly mounted semi-jacket, and longitudinal movements of bottom-hole pickup mechanism are performed by means of power spacer-feed mechanism mounted on the guide semi-jacket enveloping the lower part of the drag conveyor trough line, and consisting of two horizontal equally-spaced, parallel, opposite-directed and telescopic spacer hydraulic jacks and two feed hydraulic jacks located along the sides of drag conveyor and hinged to rigid semi-jacket of support plate and to the guide semi-jacket of power spacer-feed mechanism.
EFFECT: development of structural scheme of self-moving pickup mechanism with a rigid trough line designed for taking considerable loads from the mined rock broken with blasting and for moving along the trough line of the loading machine, boring plant or another excavation equipment.
SUBSTANCE: invention refers to mineral resource industry and can be used for transporting loose masses in wells, coal strip mines and storage areas. On the ends of the conveyer line up to 2 km long there located are power-drive stations which include extension drive shaft installed in the supporting rolling assemblies. At that, on the shaft ends there rigidly fixed are drive sprockets for transmitting rotation to the shaft through flexible chain connections from even number of electric drives, and in the middle of the shaft there rigidly fixed are drive sprockets for the conveyor pull chain drive. At that, on horizontal links of the pull chains there rigidly fixed are drag bars at a distance of 200-300 mm from each other. Metal plates are hinged to the drag bars from above and form a flexible hinged metal transportation belt with friction factor of 0.15.
EFFECT: developing reliable design of drag conveyor, which allows transportation of loose and plate materials for up to 2 km and more with the angle of slope of loose material transportation plane up to 40°, and increasing capacity up to 1500 t/h.
3 cl, 9 dwg
SUBSTANCE: bucket of cableway excavator has two separate rotary levers connected with possibility of being rotated with rear wall of the bucket and connected to a pair of shortened inclined hoisting chains. Each rotary lever can rotate relative to the axis which passes transversely to the bucket and in general parallel to rear wall and is located below the outline of rear wall. Rotary levers have such shape so that relative movement of bucket and rotary levers to the angle more than 90° can be possible; at that, bucket can be moved from vertical position to the shift angle more than 0° to horizontal.
EFFECT: simplifying the bucket unloading, and increasing capacity of bucket useful load.
8 cl, 6 dwg
SUBSTANCE: system includes bottom-hole, dumped and intermediate running fixed platforms connected by means of two running lines, two-sided bucket with V-bottom connected to each mast by means of hoisting-hauling line enveloping the corresponding sheave arranged between running lines with possibility of movement relative to each other together with running lines. Intermediate running fixed platform is equipped with two supporting sheaves of running lines and one supporting sheave of hoisting-hauling lines. Rotation axis of hoisting-hauling line sheave has the possibility of being moved along guide curves of running lines.
EFFECT: improving efficiency, reducing the wear of lines and improving environmental conditions owing to equipping the mast of intermediate running fixed platform with the most effective equipment.