Device for lifting dump trucks to opencast flank

FIELD: opencast mining; quarry transport.

SUBSTANCE: invention relates to systems of quarry transport, namely, to device for lifting and lowering of dump trucks into quarries at opencast mining. In proposed device line for lowering dump trucks into quarry is arranged in parallel to dump lifting line, and drive sprockets in head and middle parts of both lines are provided which are mechanically intercoupled. Each dump truck gripping and handling device is made in form of twin levers with rolls on free ends hinge-attached to two plate-and-roll chains. Twin levers are interconnected by platform for front wheels of dump truck. Each platform of lifting line is provided with two hollow guides of rectangular cross section rigidly attached symmetrically and normally to surface of run. With possibility of free arrangement and displacement of rectangular cross section rods for engagement of lower ends of rods with surface of run at normal operation of device and with wall of cavity in case of tear off of pull chains.

EFFECT: provision of holding of loaded dump trucks on lifting line at breakage of pull chain.

5 dwg

 

The invention relates to systems career of transport, namely to devices for lifting and lowering of the dump 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, No. 7, 1998, 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 from the quarry.

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 op is edeleny step pinned fists with the possibility of their interaction with the transported during the Assembly of cars, moved on its own wheels on special tracks 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 to 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 increased metal consumption and energy intensity, the impossibility of simultaneous descent of trucks in the quarry and retention of loaded trucks on line lifting when possible breakages of the traction chain.

The technical result of the invention is the provision of lifting the 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 with the possibility of retention of loaded trucks on line lifting when possible breakages of the traction chain.

The technical result is achieved in that the device for lifting cars, trucks aboard career, containing the line vertically with the closed plate is-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, consisting of a slope and the adjacent horizontal sections in the lower and upper parts of the device, while on the chain with a certain step fixed devices to capture and transportation of cars, trucks, so that they can move their wheels on the tracks, 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, 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 them dual 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 located with a gap above the tracks and with the possibility of placing it on the front wheels of a dump truck, and each pad in the line of ascent is made with a curved stop by idler sprockets with the possibility of its interaction with the wheels of a dump truck, the way the lines of ascent and descent are with the possibility of the whole movement of the rear wheels of trucks, on the surface the way the line of ascent with a certain step posted by niches with a sloping bottom in the side of the idler and the normal to the surface of the path by the wall, and each pad in the line of ascent is equipped with two rigidly fixed thereto symmetrically positioned and oriented normal to the surface of the path of the hollow guide of rectangular cross-section with the free placement and displacement of the rods of rectangular cross-section with the possibility of interaction between the lower ends of the rods with the surface of the path during normal operation of the device, and when the breakage of the traction chains with wall niches, while the sections of the lower ends of the rods from the side walls are oriented perpendicular to the walls and beveled on the opposite side.

Device for lifting cars, trucks aboard career presented on figure 1 - side view on the line lifting, figure 2 - plan of the complex, figure 3 - site supporting the front wheels of a dump truck attached to the traction circuit area 4 is a view As in figure 3, figure 5 - cross-section B-B in figure 4.

Device for lifting trucks on the turnover of the quarry 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 recovery is a 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 traction circuits 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 device and horizontal sections 17 in the upper part of the device. 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 a hinge (18) is attached 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 move the rollers 20 along the guides 21, placed under the guides 14 for the driving rollers 13. Dual levers 19 are interconnected pads 22 with the possibility of placing on the platform 22 of the front wheels 23 of loaded car-truck 2 on line 1 of the lift and the front wheels (not shown) empty car-truck 6 - line 5 descent. The platform 22 is placed with gaps 24 above the track 25 on line 1 of the rise and is made with a curved stop 26 by a tension sprocket 11 with the possibility of its interaction with the front wheels 23 of the vehicle-dump truck 2. Each pad (not shown) on line 5 of the descent is made with two stops (not until the Ana) can accommodate between them the front wheels of empty car-truck 6. In this way 25 on sloping areas 15 posted by can travel on them the rear wheels 27 of loaded trucks 2 on line 1 lift and rear wheels (not shown) of empty trucks 6 on line 5 of descent. 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. 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 line 1 of the ascent.

On the surface the way of lines 25 1 rise with a certain step posted by niches 38 with the bottoms 39, inclined towards the idler sprockets 11 and normal to the surface of the path 25 walls 40. Each pad 22 on line 1 equipped with two lifting is estco fixed thereto and oriented normal to the surface of the path 25 of the guides 41 and 42 of rectangular cross-section. The guides 41 and 42 are installed with the possibility of free placement and displacement of the rods 43 and 44 of rectangular cross-section with the possibility of interaction between the lower ends of the rods 43 and 44 with the surface of the path 25 during normal operation of the device, and when the breakage of the traction chains 7 - with the walls 40 of NIS 38. While the sections 45 of the lower ends of the rods 43 and 44 from the side walls 40 are oriented perpendicular to the walls 40 and beveled (46) on the opposite side. The wall 40 of each niche 38 may be reinforced removable steel plate.

47 and 48 to the direction of movement of loaded 2 and empty 6 cars, trucks when they are climbing on Board 3 career 4 and descent into the pit 4.

The device 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 5 of descent. Due to this, the upper branch of the traction chains 7 start continuously move in the direction 47 (top), and the upper branches of the traction chains 8 to move in the direction 48 (down). Each loaded car-truck 2, located in the career 4, reversing through the visor 28 moves to the horizontal section 16 of the path 25 and stops on it. With continuous movement of the traction chain is th 7 the next platform 22 runs onto the front wheels 23 of the vehicle-dump truck 2 and its focus leads 26 car-truck 2 in motion. While its rear wheels 27 are moved along the path 25. During the transition from the horizontal part 16 on the inclined section 15 a sedan loaded car-truck 2 raise, therefore, when the inclined arrangement of the chassis, the body remains in a horizontal position at all inclined section 15 of the lift. During the transition from the inclined 15 on the horizontal part 17 a sedan loaded car-truck 2 is again lowered, turning it into a horizontal position. With the upper horizontal section 17 of the loaded car-truck 2 its course through the visor 29 goes on Board 3 career 4. When lifting a loaded dump trucks 2 on platform 22 is transmitted to the load only from the front wheels 23, and the load of the rear wheel 27 is passed directly to the path 25.

When the movement of the platforms 22 installed in the guides 41 and 42, the rods 43 and 44 with their lower ends move along the surface of the path 25 slide on it and on the bottoms 39 of NIS 38. At the same time on Board 3 career 4 rise several loaded trucks 2 at intervals determined by the productivity of the pit.

Similarly going downhill empty trucks with 6 side 3 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 in front of the exact relation, equal to one, provided the movement of the traction chains 7 and 8 in opposite directions 47 and 48 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, 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.

In case of accidental breakage of the traction chains 7 on line 1 lifting platform 22 located on them front wheels 23 of loaded trucks 2 under the action of a sinusoidal component of gravity of the moving objects start to move down. While the rods 43 and 44 lapping on the next niche 38 and abuts the wall 40, allowing movement of the platform 22 and the associated loaded car-truck 2 is terminated.

Features of the invention provide lifting of loaded trucks from the quarry on the Board of career and simultaneous descent of empty cars sa is Svalov in the quarry during the continuous mode of transportation and to minimize the indicators of metal and energy when performing these operations with the possibility of retention of loaded trucks on the line of ascent when possible breakages of the traction chain.

Device for lifting cars, trucks aboard career, containing the line up from a vertically 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 device, while on the chain with a certain step fixed devices to capture and transportation of cars, trucks, so that they can move their wheels on the tracks, characterized in that parallel to the line for lift trucks placed the line for them the descent into the pit with kinematically connected between a drive sprocket in the head and middle parts of the two lines, 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 connect the t between a Playground, located with a gap above the tracks and with the possibility of placing it on the front wheels of a dump truck, and each pad in the line of ascent is made with a curved stop by idler sprockets with the possibility of its interaction with the wheels of a dump truck, the way the lines of ascent and descent are with the possibility of movement of the rear wheels of the trucks, on the surface of the path line of the boom with a certain step posted by niches with a sloping bottom in the side of the idler and the normal to the surface of the path by the wall, and each pad in the line of ascent is equipped with two rigidly fixed thereto symmetrically positioned and oriented normal to the surface of the path of the hollow guide of rectangular cross-section with the free placement and displacement of the rods of rectangular cross-section with the possibility of interaction between the lower ends of the rods with the surface of the path during normal operation of the device, and when the breakage of the traction chains with wall niches, while the sections of the lower ends of the rods from the side walls are oriented perpendicular to the walls and beveled on the opposite side.



 

Same patents:

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

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.

6 cl, 2 dwg

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

SUBSTANCE: device comprises scraper, movable trestle arranged between guy ropes with movable blocks. Device also has scraper winch with head and end ropes arranged on the movable trestle. The scraper winch includes two drums with head and end ropes arranged on the drums. The ropes pass over pulleys fastened to movable trestle top. Installed on movable trestle is tension winch provided with tension cable passing over pulley. The second end of tension cable is fastened to the movable trestle. The end rope of the scraper and the tension cable are correspondingly connected with guy ropes by means of blocks associated with movable blocks of guy ropes through collars.

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

2 dwg

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.

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: mining industry, particularly open cast mining.

SUBSTANCE: method involves loading tanks at lower horizon during tank unloading at upper horizon and lowering empty tanks from upper horizon during loaded tank lifting from lower horizon; providing additional sites for tank loading at lower horizon and corresponding additional sites for tank unloading at upper horizon; laying cable in zigzag manner so that the cable passes along loading and unloading sites and creates pulling branches; connecting tank with aerostat to each pulling branch. Tanks located at upper and lower horizons are fastened to next nearest branch so that distances between loading and unloading sited along the branches are equal one to another. Device for above method realization is also disclosed.

EFFECT: increased capacity.

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.

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

FIELD: mining construction and other industries.

SUBSTANCE: invention relates to lifting of loosened materials from working horizons (level) to higher levels. Proposed skip plant is furnished with movable pressure pipeline with three-way cock 13 and ejecting unit 14. Skip is made detachable and is provided with elastic member 11 adjoining to its bottom part. Union 10 arranged in bottom part engages at discharge station with movable pressure pipeline 2 to feed compressed air to clearance between elastic member and bottom part.

EFFECT: cleaning of bottom part of skip from stuck particles of loosened material.

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

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 systems career of transport, namely, devices for lifting and lowering of the dump trucks in the quarry in the conduct of surface mining

FIELD: transport engineering, particularly conveyers for timber transportation and sorting.

SUBSTANCE: longitudinal conveyer comprises guiding means, cross-arms installed on the guiding means and connected to traction unit, charging unit and driving unloading mechanisms. The cross-arms are made as bases provided with seats and potential energy storage means. The charging unit is made as longitudinal guiding means arranged over the seats along longitudinal conveyer axis at an angle to traction unit. The charging unit has intermediate support made as endless band and enclosing support part of longitudinal guiding means. Inner part of endless band is made of antifriction material.

EFFECT: increased operational reliability.

2 cl, 2 dwg

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