Quarry lift for dump trucks

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

 

The invention relates to systems career of transport, namely, devices for lifting cars, trucks aboard a career 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.42-45, 2003).

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), which can be used as a career lifts for cars, trucks 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 when akaushi to him horizontal sections in the lower and upper parts of the conveyer, while on the circuit with a certain step pinned fists with the possibility of their interaction with the transported during the Assembly of cars moving on own wheels on special tracks placed with the outer sides of the rails running rollers (Spivakovsky S.A., Dyachkov VK Transporting the machine. - M.: Mashinostroenie, 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 the increase of metal and energy, the inability to hold the loaded trucks on line lifting when possible breakages of the traction chain.

The technical result of the invention is the provision of lifting of loaded trucks on Board career 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 by the fact that in the career lift for cars, trucks, contains a line vertically with the closed plate-ka is a similar traction chain with the possibility of rounding it to the drive 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 lift, conveyor chain with a certain step fixed devices to capture and transportation of cars, trucks, so that they can move their wheels on the way, according to the invention, each device for the capture and transportation of cars, trucks 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 circuits, this dual levers are interconnected by a platform located with a gap above the path, and with the possibility of placing it on the front wheels of a dump truck, and each pad is made with a curved stop by idler sprockets with the possibility of its interaction with the front wheels of a dump truck, the way is to move it back wheels of cars, trucks, career and on Board in the areas of cars, trucks reversing placed visors, and in the middle part of the lift conveyor chain provided with an additional privatni and stars, while on a slope lift with the same step of the hosted device for catching the broken traction chains, each of which is made in 1 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 lift and its jamming between the Shoe and the traction chain when changing direction of movement of the traction chain after its breakage.

Career lift for cars, trucks presented in figure 1, a side view, figure 2 - site supporting the front wheels of a dump truck attached to the traction chains pad, figure 3 - view And figure 2, figure 4 - placement of a loaded car-truck on a slope, figure 5 is a device for catching the broken conveyor chain, 6 - section b-B in figure 5 with the placement of the elements during normal operation of the lift 7 is the same, when the trap snapped traction purposes.

Career lift for cars, trucks which consists of two vertically closed plate-matkovich traction chain 1 with the possibility of rounding them drive sprocket 2, idler sprockets 3 and interaction with intermediate 4 stars. The conveyor chain 1 is equipped with running rollers 5 can move the running rollers 5 of the traction chain 1 along the guide rails 6. Career lift includes an inclined section 7 and the adjacent horizontal sections 8 and 9 at the bottom and the top. Traction chain 1 with increments of fixed devices to capture and transportation of cars, trucks 10. These fixtures are made in the form of a hinge (11) is attached to the two plate-Katkov circuits 1 and placed between the double lever 12 with wheels 13 at the free ends. Dual levers 12 are installed with the possibility of rotation in the vertical plane and move the rollers 13 along the guide rails 14, are placed under the guides 6 for the driving rollers 5 of the traction chain 1. Dual levers 12 are connected by the space 15 with the possibility of placing on the platform 15 of the front wheels 16 of loaded car-truck 10. Each pad 15 is placed with a gap over 17 through 18 and is made with a curved stop 19 by idler sprockets 3 with the possibility of its interaction with the front wheels 16 of a dump truck 10. While the rear wheels 20 of the vehicle-dump truck 10 is placed on the path 18 and can move through them. In 21 career and on Board 22 in zones enter the cars, trucks 10 over idler sprocket 3 and the main drive sprocket 2 is posted visors 23 and 24. In these zones the guides 6 for the driving rollers 5 of the traction chain 1 and the guides 14 with the rollers 13 dual levers 12 is curved (25). This provides the possibility of free check-in of the rear wheels 20 and the front wheels of loaded trucks on 10 path 18 with shield 23 and the exit of the visor 24 on Board 22 career.

On a slope of 7 lifts with the same step of the hosted device for catching the broken traction chain 1 (figure 5, 6 and 7). Each device is made in the form attached to the upper side of the guide 6 for the driving rollers 5 of the traction chain 1 and is placed above the traction chain 1 Shoe 26 is a U-shaped cross-section with increasing height in the direction of movement 27 of the traction chain 1. The Shoe 26 is fixed by means of brackets 28. Under traction chain 1 with minimal clearance on the guide rollers 14 for 13 dual lever 12 is fixed to the bus 29. On the traction chain 1 inside the Shoe 26 is freely placed the wedge 30 with the possibility of a stop in the front wall 31 a U-shaped Shoe 26 during normal operation of the lift when the movement of the traction chain 1 in the direction 27.

The placement of the wedge 30 also provides the possibility of jamming between the Shoe 26 and the traction chain 1 when changing direction 32 of the traction chain 1 after its breakage.

Career lift for cars, trucks action is t as follows. When enabled, the drive sprockets 2 and 4 torque from them being in traction passed traction chain 1, which begin to continuously move in the direction 27 (up). Each loaded car-truck 10, located in the career of 21, reversing through the visor 23 moves to the horizontal section 8 of the path 18 and stops on it. With continuous movement of the traction chain 1 next platform 15 runs onto the front wheels 16 of a dump truck 10 and its focus 19 drives the vehicle-dump truck 10 is in motion. While its rear wheels 20 are moved along the path 18. During the transition from the horizontal part 8 on the inclined section 7 body loaded car-truck 10 is raised, therefore, when the inclined arrangement of the chassis, the body remains in a horizontal position at all inclined section 7 of the lift. During the transition from the inclined section 7 on the upper horizontal section 9 body loaded car-truck 10 is again lowered, turning it into a horizontal position. With the upper horizontal part 9 of loaded car-truck 10 its course through the visor 22 travels to the Board 22 career and Playground 15, turning on a curved section 25 of the guides 14 through interacting with them rollers 13, under the visor 22 together with traction chain 1 around the top drive of the stars is CCU 2, moving to the lower branch, and moves down. When lifting a loaded dump trucks 10 to 15 load is transmitted only from the front wheels 16, and the load of the rear wheel 20 is transmitted directly to the path 18. At the same time on Board 22 career up a few of loaded trucks 10 with an interval defined by the adopted distances between adjacent pads 15, and these distances are determined by the productivity of the pit. When the movement of the traction chain 1 in the direction 27 (up), located on chains 1 wedges 30 by friction forces can be moved in the direction 27 to their focus in the front wall 31 of the U-shaped Shoe 26. Due to the relatively small weight of the wedges 30 resistance to motion caused by the interaction of the wedges 30 with traction chains 1, very low, and therefore have little impact on career lift.

Due to the continuous operation and availability in addition to the head drive sprocket 2 intermediate drive sprocket 4 possible lifting of loaded trucks from 10 deep pits 21 at a high performance.

When the breakage of the traction chain 1 under the action of a sinusoidal component of their weight and are on a slope 7 of loaded cars trucks 10 traction chain 1 will begin to move in direction 3 (down). When placed on chains 1 wedges 30 begins to move along with them to the jamming of the wedges 30 between the traction chains 1 and P-shaped pads 26 that will stop and capture the broken traction chains 1 together with being at a slope of 7 career lift cars-trucks 10.

Features of the invention provide lifting of loaded trucks on Board career during the continuous mode of transportation, with the possibility of catching traction chains at their cliff.

Career lift for cars, trucks, contains a line vertically with the closed plate-Katkova traction chain with the possibility of rounding it to the drive 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 lift, conveyor chain with a certain step fixed devices to capture and transportation of trucks to move their wheels along the path, wherein each device for the capture and transportation of cars, trucks made in the form of a hinge attached to the two plate-Katkov circuits and placed between the dual levers with rollers on freedoms what's ends can be rotated dual levers in a vertical plane and moving the rollers along the guide rails, posted under guides for the running rollers of the traction chains, with dual levers are interconnected by a platform located with a gap above the path, and with the possibility of placing it on the front wheels of a dump truck, and each pad is made with a curved stop by idler sprockets with the possibility of its interaction with the front wheels of a dump truck, when this path is to move it back wheels of cars, trucks, career and on Board in the areas of cars, trucks reversing placed visors, and in the middle part of the lift conveyor chain provided with an additional drive sprocket while on a slope lift 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 when the normal is th operation of the lift and its wedge between the Shoe and the traction chain when changing direction of movement of the traction chain after its breakage.



 

Same patents:

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

SUBSTANCE: ditching and transportation rig comprises basic chassis connected with earth-moving module and with transportation-handling devices, which move ground in vertical and horizontal directions. Earth-moving module is made as bucket rotary drum secured by means of vertical and horizontal hinges, as well as control-rods to the basic chassis so that the bucket rotary drum may rotate in vertical and horizontal planes and overhanging length thereof may be changed. Device is provided with continuous-type conveyer unit made as auger system and as telescopic pipe pivotally connected with transportation-handling device, which move ground in horizontal direction. Horizontal auger is located inside bucket rotary drum and is offset with respect to drum axis so that auger axis is parallel to drum axis. The horizontal auger is transversal to inclined auger having lower end installed under outlet end of horizontal auger. Upper end of inclined auger is pivotally fastened to upper telescopic pipe section. Transportation-handling device, which moves ground in horizontal direction, is made as endless band installed on length-adjustable telescopic sliding frame, which may change ground displacement distance by means of tightening rollers. Rollers have pins installed at different heights sliding in telescopic frame grooves. The telescopic frame has flanging. Lower telescopic pipe section is provided with rotary hinge connected to telescopic frame flanging so that rotary hinge may perform longitudinal movement with respect to frame flanging. Transportation-handling device, which provides vertical ground movement is composite and made as continuous-type bucket bands mating each other in transfer points.

EFFECT: increased ability and speed of pit excavation, reduced costs of ground excavation and transportation outside the pit and provision of continuous technological cycle.

2 cl, 8 dwg

FIELD: mining, particularly machines for obtaining, or the removal of, materials in open-pit mines.

SUBSTANCE: cutting drum has cylindrical body with drive and is connected to mining machine by posts. The cutting drum is provided with disc rolling cutters arranged on line of rolling contact and with conveying augers extending from both ends thereof to drum center. Coils of each conveying auger face each other to divide the drum into two symmetric halves. Side drum surface defined by imaginary disc rolling cutter races includes cylindrical part and conical parts tapering towards outer cutting drum ends and adjoining the cylindrical part. Cylindrical part length is not less than 0.25 of cutting length Hc of material to be separated from rock. Working side surfaces of disc rolling cutters having wedge cross-sections and arranged on both cutting drum body halves in central cutting part thereof face opposite directions. Working side surfaces of disc rolling cutters having wedge cross-sections and arranged in both conical drum body parts face drum center. Both outer ends of cutting drum body are provided with disc rolling cutters made as free-cutting bits having wedge cross-sections facing outside.

EFFECT: possibility to perform continuous mining of rock characterized by increased rigidity.

8 cl, 5 dwg

FIELD: mining industry, particularly open-cast mining, particularly to produce natural stone blocks from sheet deposits by open-cast mining.

SUBSTANCE: method involves forming benches in each separate deposit so that production deposit is arranged at bench bottom; excavating mineral blocks by moving hydraulic excavator bucket teeth under productive deposit bottom and removing the blocks having natural configuration due to applying hydraulic action of excavator boom, handle and bucket to block with the use of natural deposit fracture porosity, which defines configuration and volume of produced blocks.

EFFECT: increased output, possibility to produce blocks from thin sheet deposits along with maintaining natural block volumes.

1 ex

FIELD: rock loading systems, particularly to load rock in dump-trucks with the use of mine excavator.

SUBSTANCE: system comprises hopper with outlet orifice and outlet orifice closing means. The system also has at least two modules arranged at mine face so that the modules may be moved and filled with rock by mine excavator. Each hopper has volume corresponding to load capacity of dump-trucks to be used. Outlet orifice closing means is made as pinned gate. Pedal is pivotally installed on frame slide at acute angle to slide base and may be rotated towards dump-truck driving direction. The pedal may rotate in vertical plane and is installed so that rear dump-truck wheels may be moved over the pedal. Pedal and free end of the gate are pivotally connected one to another through two control-rods and form articulated parallelogram. Hinge, which connects gate with control-rods, is fastened to counterweights by two flexible members and angle pulley so that counterweights may be displaced in vertical plane along frame posts. The hopper is provided with damping means brought into cooperation with the gate.

EFFECT: provision of continuous loading and undisturbed mine excavator operation.

3 dwg

FIELD: mining industry.

SUBSTANCE: method includes extracting quarry to planned depth by ore and rocks extraction by displacement of shelves along horizons with transferring to crushing plants, crushing rocks and then delivering them by lifting device to the surface, during extraction of quarry to planned depth at first stage during construction of board at the end of quarry in zone of decrease of power of deposit in stable rocks conveyer rope system is constructed, connected to hoisting machine, to bed with recesses, allowing to raise crushed material to large height at steep angle and with deepening of mining and displacement of crushers to lower horizons conveyer system is extended to provide for optimal transport shoulder for gathering vehicles.

EFFECT: higher efficiency, higher productiveness.

2 cl, 6 dwg, 1 ex

FIELD: open-cast mining.

SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.

EFFECT: improved operating capabilities of device.

5 cl, 5 dwg

FIELD: 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

The invention relates to the mining and transport equipment, in particular for the transportation of goods in quarries

The invention relates to mining, namely the mechanization of transport work in career

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

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