Complex for lifting dump trucks to flank of quarry and lowering them into quarry

FIELD: quarry transport.

SUBSTANCE: invention relates to complexes for lifting and lowering dump trucks into quarry at opencast mining. Proposed complex consists of inclined section and adjoining horizontal sections in upper and lower parts of complex. Line for lowering dump trucks into quarry is arranged in parallel to dump truck lifting line. Both lines are mechanically coupled by drive sprockets in head and middle parts of both lines, gear ratio being 1. Each device for gripping and transporting dump truck upwards and downwards is made in form of twin levers hinge connected to two leaf and roll chains, levers being arranged between chains. Said twin levers are connected by platform for fitting rear wheels of dump truck on lifting line and front wheels, on lowering lines. Said platform are arranged with clearances over tracks. Each platform is provided with curvilinear stop for wheels. Devices for catching torn off pull chains are arranged on inclined section at equal pitch. Each said chain catching device is made in form of U-shaped shoe secured by brackets in upper part of guide for running rolls of pull chain and arranged over pull chain with its height increasing in direction of pull chain movement. Bus is installed under pull chain within minimum clearance of guide for twin lever rolls, and wedge is freely fitted inside shoe on pull chain for thrusting against front wall of shoe at normal operation of complex and for wedging between shoe and pull chain at change of direction of movement of broken pull chain. Additional sprockets are installed on lifting and lowering lines for engagement with upper runs of pull chains. Axles of said sprockets are mechanically intercoupled by gear pair, gear ratio 1.

EFFECT: provision of continuous transportation, brought to minimum metal usage and consumption of power when lifting and lowering dump trucks.

9 dwg

 

The invention relates to systems career of transport, and in particular to systems for ascent and descent of trucks in the quarry in the conduct of surface mining.

The known device for lifting railway wagons and trucks on Board career and their descent into the pit containing the trolley on wheels with the possibility of placing rolling stock and move on inclined rails, ropes, ropes around the blocks, the balances on the go rail, drives pulleys (Demidov J.V., Trubetskoy, NICHOLAS, S. Naumov Use of inclined lifts for transportation of lumpy rock mass in deep pits inside the Arctic circle. Mining journal, 1998, No. 7, pp.42-453).

However, the disadvantages of the known devices are limited in performance caused by the cyclical nature of the work, the design complexity, high specific intensity and energy transportation of rock mass.

Known groovitude vertically closed conveyor (prototype)containing plate-roller traction chain with the possibility of rounding it to the drive and idler sprockets and move the driving rollers of the chain guides, consisting of a slope and the adjacent horizontal sections in the lower and upper parts of the conveyor, chain defined the th step pinned fists with the possibility of their interaction with the transported during the Assembly of cars, roaming in special ways, is placed with the outer sides of the rails running rollers (Spivakovsky S.A., Dyachkov VK Transporting machines, Meters: machinery, 1968, s-312, RIS, b).

The disadvantages of the known groovepusher pipeline is the inability transportation of loaded trucks on Board career due to unloading of the rock mass from the body of a dump truck at a substantial angle of inclination of the route of transportation and the increase of metal and energy consumption while lowering trucks in the quarry, the absence of safety devices.

The technical result of the invention is the provision of lifting the loaded trucks from the quarry on its Board and simultaneous descent of empty cars trucks in the quarry during the continuous mode of transportation and to minimize the indicators of metal and energy when performing these operations. The technical result is achieved by the fact that in the complex for lifting cars, trucks aboard career and their descent into the pit containing the line vertically with the closed plate-Katkova traction chain with rounding it is connected with the gearbox and the engine drive sprocket and idler sprockets to move the driving rollers of the chain guide comprising iznachalno area and the adjacent horizontal sections in the lower and upper parts of the complex, while on the circuit with a certain step fixed devices to capture and transportation of cars, trucks, so that they can move their wheels in special ways, according to the invention, parallel to the line for lift trucks placed the line for their descent into the pit with kinematically connected between a drive sprocket in the head and middle part of the two lines with a gear ratio equal to one, and each device for the capture and transportation of cars, trucks up and down made in the form of a hinge attached to the two plate-Katkov circuits and placed between the double levers with rollers at the free ends with rotatable dual levers in a vertical plane and moving the rollers along the guide rails positioned below the guide for the driving rollers of the traction chains, with dual levers are interconnected by a platform with the ability to place on it the rear wheels of a dump truck on the line of lift and the front wheels in line of descent, sites hosted with clearances above the tracks, and each pad is made with a curved stop wheel path on sloping areas posted with movement of the front wheels in the line of ascent and rear wheels - in the line of descent for horizontal layout the position of cars, trucks, on a slope line rise with the same step of the hosted device for catching the broken traction chains, each of which is made in the form fixed by means of brackets on the upper part of the guide for the driving rollers of the traction chain and placed over a traction chain of the Shoe, a U-shaped cross-section with increasing height in the direction of movement of the traction chain, and under traction chain with minimal clearance on the guide rollers for double levers fixed the tire, the traction chain inside the Shoe freely placed a wedge with the possibility of a stop in the front wall of the Shoe during normal operation of the complex and its wedge between the Shoe and traction chain when changing direction of movement of the traction chain after its breakage, on the lines of ascent and descent set of stars with the possibility of their interaction with the upper branches of the traction chains, and the axes of these stars kinematically interconnected gear pair with a gear ratio equal to one.

The complex is presented in figure 1 - side view on the line lifting, figure 2 - plan of the complex, figure 3 - site supporting the rear wheels of a dump truck attached to the traction circuit area 4 is a view As in figure 3, figure 5 is a device for catching the broken conveyor chain, figure 6 cross-section B-B in figure 5 with the size is the group of elements during normal operation of the complex, figure 7 is the same, when the trap snapped traction purposes, Fig - transverse incision along the lines of ascent and descent, figure 9 is a view In Fig.

System for lifting trucks on Board career and their descent into the pit contains line 1 for lifting the loaded trucks 2 Board 3 career 4 and placed parallel to her line 5 for the descent of empty trucks 6 in pit 4. Line 1 for lifting and line 5 for descent consist of two vertically closed plate-matkovich traction chains 7 and 8 with the possibility of rounding them drive sprockets 9 and 10 and idler sprockets 11 and 12 with the movement of the driving rollers 13 of the traction chains 7 and 8 along the guide rails 14. Each line 1, 5 consists of inclined sections 15 and the adjacent horizontal sections 16 in the lower part of the complex and horizontal sections 17 in the upper part of the complex. On the chains 7 and 8 each of lines 1 and 5 with a certain step fixed devices to capture and transportation of cars, trucks 2 and 6. These fixtures are made in the form of articulated (18) to the two plate-Katkov circuits 7 - line 1 and the plate-Katkov traction circuits 8 - on line 5 and placed between the double levers 19 with the rollers 20 at the free ends. Dual levers 19 are installed with the possibility of rotation in the vertical plane, and re is edenia rollers 20 along the guides 21, posted under guides 14 for the driving rollers 13 of the traction chains 7 and 8. Dual levers 19 are interconnected pads 22 with the possibility of accommodation in the area 2 line lifting 1 of the rear wheels 23 of loaded car-truck 2 and the front wheels of empty car-truck 6 - line 5 descent. Platform 22 is placed with gaps 24 above the track 25. Each pad 22 on line 1 of the ascent is made with a curved stop 26 by a tension sprocket 11 with the possibility of its interaction with the rear wheels 23 of the vehicle-dump truck 2. Each space on the line of descent 5 is made with two stops can accommodate between them the front wheels 27 empty car-truck 6. When this path 25 on the inclined section 15 of the line of ascent 1 posted, with the possibility of movement of the front wheels 27 Laden trucks 2 on line 1 of the hoist and the rear wheels 23 of empty trucks 6 on line 5 of descent at the horizontal location of the trucks 2 and 6. Career 4 and on Board 3 in the zone of entry of the trucks 2 and 6 on lines 1 and 5 of ascent and descent over idler sprockets 11, 12 and driven sprockets 9 and 10 placed visors 28 and 29. Guides 14 for traction circuits 7, 8 and guide rollers 21 for 21 dual levers 19 in these areas are made curvilinear with the ability to provide the of free check-in of the rear wheels 23 of loaded trucks 2 and the front wheels 27 of empty trucks 6 on path 25. The drive sprocket 9 and 10 provided with a common drive consisting of a motor 30 and gear 31, the low speed shaft which is directly connected with the shaft of the drive sprocket 9 line 1 lift and through the gear pair 32 with shaft drive sprocket 10 line 5 shutter trucks. Its final drive ratio gear pair 32 is assumed to be equal to one. Lines 1 and 5 provided with an intermediate drive sprockets 33 and 34, which are also kinematically linked with General motor 35 with gear 36 and the gear pair 37. On line 5 of descent can be set to a smaller number of intermediate sprockets 34, than the intermediate sprocket 33 on the line of ascent 1. On a slope of 15 complex with the same step of the hosted device for catching the broken traction chains. On line lifting 1 each of these devices is made in the form fixed by means of brackets 38 on the upper part of the guide 14 for the driving rollers 13 of the traction circuit 7 and is placed above the traction chain 7 Shoe 39 a U-shaped cross-section. The Shoe 39 is made with increasing height in the direction 40 of the traction chain 7. Under traction chain 7 with minimal clearance on the guide rollers 21 for 20 dual levers 19 is fixed to the bus 41. On the conveyor chain 7 inside the Shoe 39 is freely placed the wedge 42 with the possibility of a stop in the front wall 43 of the Shoe 9 during normal operation of the complex and its wedge between the Shoe 39 and the traction circuit 7 when changing direction 44 of the traction circuit 7 after its breakage. On the lines of the lifting system 1 and descent 5 installed additional sprockets 45 and 46 with the possibility of their interaction with the upper branches of the traction chains 7 and 8. Axis 47 and 48 of the sprockets 45 and 46 kinematically interconnected gear pair 49 with a gear ratio equal to the unit using a transmission shafts 50 and 51. 52 - the direction of movement of empty trucks 6 during their descent into the pit 4.

The complex operates as follows. When turning on the motors 30 and 35 torque from them is transmitted through the gears 31 and 36 on the top drive 9 and the intermediate drive sprocket 33 line lift 1, and through the gear pair 32 and 37 on the top drive 10 and the intermediate 34 asterisk line of descent 5. Due to this, the upper branch of the traction chains 7 start continuously move in the direction of 40 (top) and upper branches of the traction chains 8 to move in the direction 52 (down). Each loaded car-truck 2, located in the career 4, through the visor 28 moves to the horizontal section 16 of the path 25 and stops. With continuous movement of the traction chains 7 the next platform 22 runs onto the rear wheels 23 of the vehicle-dump truck 2 and its focus leads 26 car-truck 2 in motion. Its front wheels 27 first move in the horizontal section 16 of the path 25, and then move on to its curvilinear section 15 (1). The poet is loaded car-truck 2 remains in a horizontal position at all inclined section 15 of the lift. The platform 22 is transmitted to the load only on the rear wheels 23, and the load of the front wheel 27 is passed directly to the path 25. After climbing to the top horizontal section 17 of the loaded car-truck 2 its course through the visor 29 goes on Board 3 career 4, and the space 25, turning on a curved section of guide 21 through interacting with them rollers 20, under the visor 29 together with traction chain 7 around the drive sprocket 9, moves to the lower branch and moves down. At the same time on Board 3 career 4 rise several loaded trucks 2 with the interval defined by the adopted distance between adjacent pads 22.

Similarly empty cars-trucks with 6 visor 29 Board 3 career 4 drive its front wheels 27 on the path 25 and stop. With continuous movement of the traction chains 8 the next platform 22 is coming to the front wheel 27 empty car-truck 6 and moves it in the direction 52. By removing the path 25 from the upper branches of the traction chains 8 when moving along the inclined section 15 of empty cars-trucks 6 all the way during their descent take a horizontal position. On the lower horizontal section 16 line 5 before the visor 28 platform 22 rotates in a clockwise direction, allowing the stop 26 is not with the no exit empty car-truck 6 through the visor 28 in pit 4.

Due to the kinematic connection between the traction chains 7 and 8 both lines 1 and 5 through the use of gear sets 32 and 37 with a transmission ratio equal to one, provided the movement of the traction chains 7 and 8 in opposite directions 40 and 52 at the same speed.

Due to the continuous operation and availability in addition to the top of the drive sprocket 9 and 10 intermediate drive sprockets 33 and 34 on both lines 1 and 5 possible lifting of loaded trucks 2 from deep pits 4 and the descent of empty trucks 6 in pit 4 at high performance. The implementation of the kinematic relationships between the drive sprocket 9, 10 and 33, 34 of the two lines 1 and 5 reduces the power consumption during the ascent-descent cars, trucks 2 and 6 due to unloading of the actuator, i.e. the energy of the actuators is spent almost exclusively on the rise of the rock mass.

When the breakage of the traction chains 7 in the line of ascent 1 under the action of a sinusoidal component of their weight and the weight placed on the inclined section 15 of loaded trucks 2 traction circuit 7 starts to move in the direction 44 (down). When placed on the chains 7 wedges 42 will move with them to jamming of the wedges 42 between the traction chains 7 and the U-shaped shoes 39 that will stop and capture the broken taguahare 7 together with located on a slope of 15 complex cars-trucks 2.

When the breakage of the traction chains 8 on the line of descent 5 under the action of a sinusoidal component of their weight and the weight placed on the inclined section 15 of empty trucks 6 speed traction chains 8 in the direction 52 will begin to increase. However, due to their engagement with the additional sprocket 46 will happen almost instantly lockup, because the axis 48 stars kinematically connected with the axis 47 of the sprocket 45 on the line of the lifting system 1, which are engaged and rotate from the traction chains 7, under much greater tension than the conveyor chain 8. So will capture the traction chains 8 are on the line of descent 5 empty cars-trucks 6. When the cliffs along the line of the lifting system 1, and in the line of descent 5 signals of the respective sensors is disconnecting drives and the inclusion of the braking devices.

Features of the invention provide lifting of loaded trucks from the quarry on the Board of career and simultaneous descent of empty cars trucks in the quarry during the continuous mode of transportation and to minimize the indicators of metal and energy when performing these operations for the removal of traction chains and on the lines of ascent and descent of the trucks at the cliffs of traction chains.

Complex DL is lifting cars, trucks aboard career, contains a line vertically with the closed plate-Katkova traction chain with rounding it is connected with the gearbox and the engine drive sprocket and idler sprockets to move the driving rollers of the chain guides, consisting of a slope and the adjacent horizontal sections in the lower and upper parts of the complex, while on the chain with a certain step fixed devices to capture and transportation of cars, trucks, so that they can move their wheels in special ways, characterized in that parallel to the line for lift trucks placed the line for their descent into the pit with kinematically interconnected drive sprocket in the head and middle part of the two lines with a gear ratio equal to one, and each device for the capture and transportation of cars, trucks up and down made in the form of a hinge attached to the two plate-Katkov circuits and placed between the double levers with rollers at the free ends can be rotated dual levers in a vertical plane and moving the rollers along the guide rails positioned below the guide for the driving rollers of the traction chains, with dual levers are interconnected by a platform with the possibility of placing it back the Oles of a dump truck on the line of lift and the front wheels - on the line of descent, sites hosted with clearances above the tracks, and each pad is made with a curved stop wheel path on sloping areas posted with movement of the front wheels in the line of ascent and rear wheels on the line of descent at the horizontal location of the trucks, on a slope with the same step of the hosted device for catching the broken traction chains, each of which is made in the form fixed by means of brackets on the upper part of the guide for the driving rollers of the traction chain and placed over a traction chain of the Shoe, a U-shaped cross-section with increasing height in the direction of movement the traction chain, and under traction chain with minimal clearance on the guide rollers for double levers fixed the tire, the traction chain inside the Shoe freely placed a wedge with the possibility of a stop in the front wall of the Shoe during normal operation of the complex and its wedge between the Shoe and the traction chain when changing direction of movement of the traction chain after its breakage, on the lines of ascent and descent set of stars with the possibility of their interaction with the upper branches of the traction chains, and the axes of these stars kinematically interconnected gear pair with a gear ratio equal to one.

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Same patents:

FIELD: mining industry, namely, high capacity (with load capacity over 40 tons) loading and transporting machines for underground and open mining operations.

SUBSTANCE: loading and transporting machine includes loading tool, consisting of bucket with impact teeth, boom and controlling hydro-cylinders, driving mechanism and force plant. Frontal wall of bucket is made with part extending beyond its side walls shaped as isosceles triangle or shape close to that for distance not less than 1/3 of its total length. Working edge of frontal wall of bucket is formed by even sides of triangle. Impact teeth are mounted along the axis of front wall, near side walls and with step of 3÷5 of width of impact tooth. Back wall of bucket is made inclined relatively to front wall at an angle more than 90°.

EFFECT: increased efficiency of machine operation due to lowered resistance of insertion of bucket into stack of rock.

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FIELD: mining, particularly to excavate, transport and stack of barren rock and mineral at placer, marine (off-shore) and bedded deposits.

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EFFECT: decreased costs of device production, increased output and decreased rock mining costs.

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Quarry excavator // 2296860

FIELD: mining industry.

SUBSTANCE: invention relates to device for excavating and transporting rock mass and it can be used for selective open-cast mining without preliminary ripping from complex structural deposits of horizontal and gentle dip. Proposed excavator includes running mechanism, boom with receiving conveyor, transfer and waste conveyors, working member, control hydraulic cylinders, namely, crows, turning and boom lifting ones, bracket-slider connected with crowd and turning hydraulic cylinders for displacement along guides on housing of crowd hydraulic cylinders, frame connecting housing of crowd hydraulic cylinders hinge-fastened on head of boom, and telescopic receiving conveyor arranged between head part of boom and working member. The latter is hinge-connected to bracket-slider and is made in form of shovel without rear wall and with working edge provided with shock and static teeth.

EFFECT: increased efficiency of opencast mining owing to use of explosionfree technology and provision of selective excavation of ore reducing losses and impoverishment.

2 cl, 3 dwg

FIELD: excavation.

SUBSTANCE: invention relates to dragline bucket suspension and control system. Proposed dragline has rated load capacity by suspended weight exceeding 100 tons. It has support installed for turning on base, boom assembly projecting outwards from support and installed for turning together with support, bucket, rigging and control system. Bucket is suspended from extreme end of boom by means of adjustable hoist cables and is controlled by at least one adjustable drag cable stretching from support to bucket. Rigging has first and second sheaves of boom head arranged on extreme end or near extreme end of boom assembly at fixed distance from each other, one after the other, so that first sheave is located closer to support then second sheave. First and second hoist cables pass over first and second sheaves of boom head, one cable passing over each sheave. First hoist cable passes downwards over sheave and is connected in operating position with front part of bucket. Second hoist cable passes downwards over second sheave and is connected in operating position with rear part of bucket. Control system uses computer to control relative travel of first and second hoist cables through load-lifting device. It is installed to change angle of tilting of bucket in vertical plane by differential displacement of one hoist cable relative to the other.

EFFECT: improved efficiency of dragline operation, provision of accurate adjustment of bucket displacement angle.

9 cl, 22 dwg

FIELD: mining industry; quarry lifts for dump trucks.

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EFFECT: provision of lifting of loaded dump trucks to flank of opencast and possibility of catching broken off traction chains.

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FIELD: mining industry, particularly open cast mining.

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2 cl, 2 dwg

FIELD: quarry vehicles.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks at opencast mining. Device is provided with dump-truck lowering line parallel to lifting line with drive sprockets in head and middle parts of both lines for mechanical engagement of said lines. Each gripping and up and down transporting device for dump-trucks is made ion form of twin levers with rollers of free ends hinge-connected to two leaf and-roller chains and arranged between said chains for turning twin levers in vertical plane and shifting rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform for front wheels of dump-truck. Said platform are arranged with clearances over tracks, each being provided with curvilinear stop from side of tension sprockets on lifting line for engagement with front wheels of dump-truck and with two stops on lowering line for arranged of front wheels of dump-truck between said stops. Lips are made in quarry and on its flank in zones of entry of dump trucks on lifting and lowering lines over tension and drive sprockets. Guides for traction chains and lever rollers are made curvilinear to provide free getting of dump-trucks on track. Mechanical couplings of drive sprockets of both lines are made in form of reduction gear and toothed pair coupled with electric motor.

EFFECT: provision of lifting of loaded dump-trucks from quarry to opencast flank with simultaneous lowering of empty dump-trucks into quarry at continuous transportation, brought to minimum consumption of metal and energy at carrying out said operations.

3 cl, 6 dwg

FIELD: transport engineering; quarry dump trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks when carrying out opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition of lifting line, a lowering line, both lines are parallel, being mechanically coupled by drive sprockets in head and middle parts of both lines. Each device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected to two leaf-and-roller chains and arranged in between for turning twin levers in vertical plane and moving rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform to arrange front wheels of dump0truck. Platforms are arranged with clearances over tracks and are provided with curvilinear stop on lifting line from side of tension sprocket for engagement with front wheels of dump-truck and are made on lowering line with two stops to arranged front wheels of dump-truck between said stops. Cavities with inclined bottom to said of tension sprocket and wall square to surface of track are arranged on surface of lifting line track at definite step. Each platform of lifting line is furnished with shoe hinge-secured on platform symmetrically to longitudinal axis of lifting line for engagement of free end of shoe with surface of track at normal operation and, at break of traction chains, engagement of free end with wall of cavity, and free end of curvilinear form, with stop of platform.

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FIELD: transport engineering; quarry dump-trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks, namely, to complexes for lifting and lower dump-trucks at opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition to lifting line, lowering line parallel to lifting line, both lines being coupled by drive sprockets in head and middle parts of both lines. Each gripping device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected two leaf-and-roller chains and arranged in between to provide movement of roller along guides. Platform is secured on levers to arranged rear wheels of dumps-truck on lifting line and front wheels, on lowering line. Platform is arranged with clearances over tracks and on lifting line it is provided with curvilinear stop from side of tension sprocket for engagement with rear wheel of dump-truck, and on lowering line it is provided with two stops for arrangement of front wheels of dump-truck between the stops. Tracks on inclined sections are arranged to move front wheels on lifting line and rear wheels on lowering line at horizontal position of dump-trucks. Lips are arranged in opencast and on its flank in zones of entry of dump-trucks on lifting line and lowering line over tension and drive sprockets, and guides for traction chains and rollers of levers are made curvilinear to provide free getting of dump-truck wheels onto tracks.

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FIELD: earth-moving equipment, particularly machines for ground cutting, pit excavation for hydraulic structure, large-scale object building, as well as for mineral deposit development.

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2 cl, 8 dwg

FIELD: mechanical engineering; lifting equipment.

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8 cl, 7 dwg

FIELD: mining construction and other industries.

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5 dwg

FIELD: mining industry; quarry lifts for dump trucks.

SUBSTANCE: proposed lift contains line with closed leaf-and-roll chain. Devices for gripping and transporting of dump trucks are arranged on chain at definite pitch. According to invention, each gripping and transporting device for dump trucks is made in form of twin levers with rolls on free ends hinge-connected to two leaf-and-roll chains and arranged between said chains. Twin levers are installed for turning in vertical plane and moving rolls along guides arranged under guides for running rolls of traction chains. Twin levers are interconnected by platform installed with clearance over way for moving rear wheels of dump trucks and with possibility of arranged on front wheels of dump truck on said platform. Each platform is provided with curvilinear stop side of tension sprocket for engagement with front wheels of dump truck. In quarry and on its flank in zones of entering of dump trucks moving rearwards lips are installed, and in middle part of lift, traction chains are provided with additional drive sprockets. Catchers of broken traction chains are installed at equal step on inclined section of lift. Each catcher is made form of U-shaped shoe arranged over traction chain secured on upper part of guide traction chain for running rolls by means of brackets. Height of shoe increases in direction of movement of traction chain. Bus is secured on guide for twin lever rolls under traction chain. Wedge is freely fitted on traction chain inside shoe for thrusting against front wall of shoe at normal operation of lift and for jumping between shoe and traction chain at change of direction of movement of traction chain after its break.

EFFECT: provision of lifting of loaded dump trucks to flank of opencast and possibility of catching broken off traction chains.

7 dwg

FIELD: quarry vehicles.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks at opencast mining. Device is provided with dump-truck lowering line parallel to lifting line with drive sprockets in head and middle parts of both lines for mechanical engagement of said lines. Each gripping and up and down transporting device for dump-trucks is made ion form of twin levers with rollers of free ends hinge-connected to two leaf and-roller chains and arranged between said chains for turning twin levers in vertical plane and shifting rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform for front wheels of dump-truck. Said platform are arranged with clearances over tracks, each being provided with curvilinear stop from side of tension sprockets on lifting line for engagement with front wheels of dump-truck and with two stops on lowering line for arranged of front wheels of dump-truck between said stops. Lips are made in quarry and on its flank in zones of entry of dump trucks on lifting and lowering lines over tension and drive sprockets. Guides for traction chains and lever rollers are made curvilinear to provide free getting of dump-trucks on track. Mechanical couplings of drive sprockets of both lines are made in form of reduction gear and toothed pair coupled with electric motor.

EFFECT: provision of lifting of loaded dump-trucks from quarry to opencast flank with simultaneous lowering of empty dump-trucks into quarry at continuous transportation, brought to minimum consumption of metal and energy at carrying out said operations.

3 cl, 6 dwg

FIELD: transport engineering; quarry dump trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks when carrying out opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition of lifting line, a lowering line, both lines are parallel, being mechanically coupled by drive sprockets in head and middle parts of both lines. Each device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected to two leaf-and-roller chains and arranged in between for turning twin levers in vertical plane and moving rollers along guides arranged under guides for running rollers of traction chains. Twin levers are interconnected by platform to arrange front wheels of dump0truck. Platforms are arranged with clearances over tracks and are provided with curvilinear stop on lifting line from side of tension sprocket for engagement with front wheels of dump-truck and are made on lowering line with two stops to arranged front wheels of dump-truck between said stops. Cavities with inclined bottom to said of tension sprocket and wall square to surface of track are arranged on surface of lifting line track at definite step. Each platform of lifting line is furnished with shoe hinge-secured on platform symmetrically to longitudinal axis of lifting line for engagement of free end of shoe with surface of track at normal operation and, at break of traction chains, engagement of free end with wall of cavity, and free end of curvilinear form, with stop of platform.

EFFECT: provision of lifting loaded dump-trucks to flank of opencast and simultaneous lowering of empty-dump trucks into opencast with possibility of holding loaded dump-truck on lifting line in case of breaks of traction chains.

2 cl, 7 dwg

FIELD: transport engineering; quarry dump-trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks, namely, to complexes for lifting and lower dump-trucks at opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition to lifting line, lowering line parallel to lifting line, both lines being coupled by drive sprockets in head and middle parts of both lines. Each gripping device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected two leaf-and-roller chains and arranged in between to provide movement of roller along guides. Platform is secured on levers to arranged rear wheels of dumps-truck on lifting line and front wheels, on lowering line. Platform is arranged with clearances over tracks and on lifting line it is provided with curvilinear stop from side of tension sprocket for engagement with rear wheel of dump-truck, and on lowering line it is provided with two stops for arrangement of front wheels of dump-truck between the stops. Tracks on inclined sections are arranged to move front wheels on lifting line and rear wheels on lowering line at horizontal position of dump-trucks. Lips are arranged in opencast and on its flank in zones of entry of dump-trucks on lifting line and lowering line over tension and drive sprockets, and guides for traction chains and rollers of levers are made curvilinear to provide free getting of dump-truck wheels onto tracks.

EFFECT: provisions of lifting of loaded dump-trucks to flank of opencast and simultaneous lowering of empty-trucks into opencast at continuous transportation and reduced to minimum metal usage and energy consumption when carrying out said operation.

3 cl, 6 dwg

The invention relates to a lifting apparatus for surface mining

The invention relates to lifting and can be used in the mining industry, for example, for lifting rocks with the underlying aquifers in the overlying or when drilling vertical and inclined workings

The invention relates to systems career of transport, namely, devices for lifting trucks aboard a career in the conduct of surface mining

The invention relates to hoisting devices, in particular to inclined lifts, for example, dump pits, and can be used in the slipways

FIELD: transport engineering; quarry dump-trucks.

SUBSTANCE: invention relates to devices for lifting and lowering dump-trucks, namely, to complexes for lifting and lower dump-trucks at opencast mining. Proposed device for lifting dump-truck to flank of opencast contains, in addition to lifting line, lowering line parallel to lifting line, both lines being coupled by drive sprockets in head and middle parts of both lines. Each gripping device for gripping and transporting of dump-trucks up and down is made in form twin levers with rollers hinge-connected two leaf-and-roller chains and arranged in between to provide movement of roller along guides. Platform is secured on levers to arranged rear wheels of dumps-truck on lifting line and front wheels, on lowering line. Platform is arranged with clearances over tracks and on lifting line it is provided with curvilinear stop from side of tension sprocket for engagement with rear wheel of dump-truck, and on lowering line it is provided with two stops for arrangement of front wheels of dump-truck between the stops. Tracks on inclined sections are arranged to move front wheels on lifting line and rear wheels on lowering line at horizontal position of dump-trucks. Lips are arranged in opencast and on its flank in zones of entry of dump-trucks on lifting line and lowering line over tension and drive sprockets, and guides for traction chains and rollers of levers are made curvilinear to provide free getting of dump-truck wheels onto tracks.

EFFECT: provisions of lifting of loaded dump-trucks to flank of opencast and simultaneous lowering of empty-trucks into opencast at continuous transportation and reduced to minimum metal usage and energy consumption when carrying out said operation.

3 cl, 6 dwg

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