Method to form trajectory of dragline mine excavator bucket and working equipment for its realisation
SUBSTANCE: method to form a trajectory of excavator bucket motion is carried out with the help of an operation of putting a handle with the bucket into backward motion in the vertical plane in a system of coordinates connected to a boom. At the same time the axis of handle rocking in the specified system of coordinates is fixed. The operation of trajectory curvature control is carried out by change of the distance between the bucket and the axis of handle rocking. At the same time the handle rocking axis fixed in the system of coordinates connected to the boom is moved in the system of coordinates connected with the handle along the circumference arc, the centre of which is at the end of the handle. The proposed method is realised by working equipment comprising a boom, a handle with a bucket rigidly installed on it, a rope mechanism of bucket lift and a discharge mechanism. Besides, the discharge mechanism comprises a yoke, which forms rotating couples with the boom and the handle, and a hydraulic cylinder, the stem and body of which are connected hingedly with the yoke and handle accordingly.
EFFECT: simplified design of a discharge mechanism, at the same time possibility is provided to adjust bucket movement trajectory.
2 cl, 3 dwg
The invention relates to mining machines used in the development of mineral deposits in an open way, namely to career excavators type "shovel" with cable-driven lifting of the bucket.
The working equipment of the cable quarry excavator type "shovel" includes a shaft, a handle mounted on it with a bucket, the engine head and the cable hoist bucket. A rope excavators, the trajectory of the cutting edge of the bucket is formed as a result of the implementation of two operations: cast handle with bucket in swinging movement in a vertical plane in the coordinate system associated with the bolt, the axis of swing of the handle in this coordinate system fixed and adjustment operations of curvature of the trajectory. The second operation is carried out either by changing the distance between the bucket and the axis of swing of the handle, which in this case is fixedly mounted in the boom, either by moving the axis relative to the boom.
The famous cable car career excavator type "shovel" (P&N 2800 XP(In), booklet Harnishfeger Corporation, Milwaukee, WI 53201), in which the handle is connected with an arrow through the saddle bearing. In the kinematic connection of the boom, dipper and saddle bearing rotational formed and tupasela kinematic pair, allowing for the rotation and translational movement of the handle relative to the boom. The combination of these three links given drive kinematic pairs is a rotational-translational mechanism of the power cable excavator. The actuator rotational-translational mechanism of the pressure, under which there is a forward movement of the handle relative to the saddle bearing, located on the boom and made in the form of sesterhenn rack and pinion drive mechanism. In the process, the excavator does periodically shifting face by a distance equal to the amount of movement of the handle relative to the saddle bearing. After another, shifting the digging begin when fully drawn stick, then gradually push with a drive mechanism pressure, increasing to a maximum value of the radius of the trajectory digging.
Note three distinctive characteristic of work equipment excavator-analogue: 1) the mechanism of the head contains the translational kinematic pair; 2) the drive mechanism of the head is located on the boom; 3) the radius of the circular path of the cutting edge of the bucket can be modified and the center of rotation of the bucket motionless.
The second distinctive feature should be attributed to the merits of the excavator-similar as the placement of the drive mechanism pressure on the boom, the connection is authorized with turntable swivel, eliminates dynamic loading of metal turntable and installed it mechanisms from exposure to forces of pressure.
The third hallmark is evaluated positively, as selling pressure by changing the radius of curvature of the trajectory of the cutting edge of the bucket is the same for any point of the trajectory digging - this simplifies the management excavator, does not tire the operator and, therefore, positively affects the performance of the excavator.
And this is the first distinctive feature should be attributed to the shortcomings of work equipment excavator-analogue, given the fact that the pressure mechanism includes wearing open kinematic pair, and drive this mechanism includes a multi-step and time-consuming to manufacture gear, belt and other mechanical transmission that is built in metal working equipment. The combination of these factors leads to the reduction of the most important indicators of quality excavator, namely, manufacturability, durability, and maintainability.
The famous cable car career excavator BUSYRUS-795B (brochure BUSYRUS Electric Mining Shovels-795, World Headquarters, 1100 Milwaukee Avenue, South Milwaukee, Wisconsin, 53172-0500, USA), selected as a prototype. The excavator is equipped with two arrows in Pomogailo mobile and basic stationary. On the fixed arm mounted on the rotary platform, are HEADUNITS of the lifting mechanism of the bucket. Mobile boom pivotally connected with the pivoting platform excavator with the possibility of relative rotation under the action of the drive cylinder, the rod of which is connected to this shaft, and the cylinder is connected to a two-legged stand, which is installed on the rotary platform and passes to it the force of the head pressure developed actuated by a hydraulic cylinder. A handle pivotally connected with a movable boom with the possibility of relative rotation under the action of the hoisting rope of a lifting mechanism of the bucket. Collectively rotating platform with two-legged stand, the movable shaft, the drive cylinder and the handle form an articulated i.e. the representing mechanism of the pressure of the working equipment of the excavator. Moreover, when turning the mobile boom from one extreme position to the other the axis of rotation of the handle attached to it by the bucket moves in an arc relative to the main stationary arrows, and the distance between the bucket and the axis of rotation of the handle remains constant. The result is that in different points of the trajectory digging to implement the teeth of the bucket into the soil at the same depth have the center of rotation of the handle to move at unequal distances, Thu the complexity of the driver, therefore negatively affect the performance of the excavator.
Highlight three distinctive characteristic of work equipment excavator prototype: 1) in the mechanism of pressure there is no translational kinematic pair; 2) the force of pressure through the winch pressure acts on the rotary platform; 3) the radius of rotation of the cutting edge of the bucket is constant, and the center of rotation moves in an arc, in the coordinate system associated with a fixed boom. The use of the mechanism of pressure excavator prototype constructive scheme articulated, i.e. allows to get rid of such defects excavator-analogue, such as rapid wear of open kinematic pairs, and the presence of multi-step and time-consuming to manufacture gear, belt and other mechanical transmission. However, the disadvantages of the prototype, due to his second and third distinctive signs, are sufficient to find a new way to move the bucket rope quarry excavator.
The technical problem of the invention is to preserving the working equipment of the cable quarry excavator advantages of the method of forming the trajectory of the bucket, which changes the distance between the bucket and the axis of swing of the handle, substantially simplify the design IU is anima head, deletion of the kinematic pair with the translational motion of the connected links.
The technical problem is solved by forming the trajectory of the bucket rope quarry excavator with operation cast handle with bucket in swinging movement in a vertical plane in the coordinate system associated with the boom, with the axis of swing of the handle in this coordinate system is fixed, and by operation of the regulation of curvature of the trajectory by changing the distance between the bucket and the axis of swing of the handle, which is stationary in the coordinate system associated with the bolt, the axis of swing of the handle is moved in the coordinate system associated with the handle, along the arc of a circle whose center is at the end of a handle.
Working equipment to implement the foregoing method includes the boom, arm is rigidly mounted on the bucket, rope hoist bucket and the mechanism of pressure. The pressure mechanism includes a rocker arm forming a arrow and a handle rotational pairs, and the hydraulic cylinder, the piston rod and the housing of which is pivotally connected with a yoke and handle accordingly. Swivel rocker and the handle allows you to change in proportion to the moving rod of the hydraulic cylinder, the distance between the cutting edge of the bucket and the axis of the swivel rocker by castrelos.
In the proposed method, as in the famous implemented in the design of the analog method, the center of rotation of the handle fixed in the coordinate system associated with the main boom of the excavator, while in method implemented in the design of the prototype, this center of rotation is movable relative to the main boom. The similarity of the first two (proposed and implemented in the design of similar) ways is that, when the handle is moved relative to the boom in the coordinate system associated with the arrow changes the distance from the center of rotation of the handle to the tip of the bucket teeth that in the coordinate system associated with the handle, looks like the move a handle, and its center of rotation, in which the arrow is fixed. The difference between these two methods is that in the known method the specified move the center of rotation of the handle is straight-forward and the proposed method has the shape of an arc, the chord of which is equal to the length of this move. Therefore, implementation of the proposed method allows you to replace the engine head translational rotational kinematic pair and create a working equipment for cable quarry excavator, which has all the above advantages and analog prototype and has none of their fault.
For the delivery of the AI method is optimal linkage head (rocker, the handle and cylinder). Such a mechanism of power is universal, mounted on the boom and stick, and if the handle of the girder, respectively symmetrically on each beam is used to transfer large effort, relatively simple to manufacture, durable and more durable than rack-and-pinion mechanisms in the working equipment of the famous mining shovels.
This mechanism has minimal backlash, easy mobility and high reliability in overload, allows you to smoothly adjust the distance between the cutting edge of the bucket and the axis of swing of the handle due to the rotation of the rocker arm relative to the handle in proportion to the moving rod of the hydraulic cylinder, and rational use of hydraulic drive, which allows you to create great efforts with a smooth regulation of the movement of the piston rod of the hydraulic cylinder.
Swivel rocker and the handle allows you to change the distance between the cutting edge of the bucket and axis, on which the rocker is proportional to the moving rod of the hydraulic cylinder.
The proposed method changes the trajectory of the bucket allows, while maintaining the benefits of cable quarry excavator, to simplify the working of the equipment, namely the design of the boom, dipper and mechanism of pressure.
In figures 1 and 2 presents the career of the cable ek is cavator with working equipment, shaping the trajectory of the bucket, according to the invention, and figure 3 - move the swing axis 11 of the handle in the coordinate system associated with the handle.
Working equipment excavator (figures 1 and 2) contains: arrow 1, a handle 2 attached to it by the bucket 3, the cable lift mechanism 4 and the mechanism of the head 5. The pressure mechanism 5 includes a rocker arm 6, pivotally connected by its ends, arrow 1, and with the free end of the handle 2, and the hydraulic cylinder 8, body 9 which is connected pivotally to the handle 2, and the rod 10 pivotally connected with the arm 6. In the swivel connection between the handle 2, the rocker arm 6 and the cylinder 8 of these units forms a rigid structure in which the distance between the bucket 3, mounted on the handle 2, and the end of the rocker arm 6, pivotally connected to the boom 1 may vary with the movements of the rod 10 relative to the housing 9.
Working equipment for implementing the method according to the invention operates as follows. The trajectory of the bucket is formed from the sole of the face (figure 2), which sets the bucket 3, the handle 2 is held vertically, the rod 10 of the cylinder 8 is retracted into the housing 9. By means of the hydraulic mechanism of the head, extends the stem 10 of the cylinder 8 and is close to the linear movement of the bucket by an amount corresponding raschet the th depth of penetration of the teeth of the bucket in the breed. Powering the winch rope lifting mechanism 4, turn rigid structure (arm 2 - arm 6 - cylinder 8) around the axis of the cylindrical swivel rocker 6 arrow 1. When the bucket 3 is moved in a vertical plane on a circular path, and the teeth of the bucket 3 describe the trajectory of the cutting radius of curvature which is equal to the distance from the axis of rotation of the above-mentioned rigid structure to the teeth of the bucket 3. Bucket 3 is filled with the subsequent unloading of the vehicle or to the dump, and it is installed on the bottom of the face to perform the next cycle of digging.
The application of the present invention will improve the mechanism of the career head of cable excavator, as well as to simplify the construction boom and dipper.
1. The method of forming the trajectory of the bucket rope quarry excavator, including cast handle with bucket in swinging movement in a vertical plane in the coordinate system associated with the boom, with the axis of swing of the handle in this coordinate system is fixed, and the operation control of the curvature of the trajectory by changing the distance between the bucket and the axis of swing of the handle, characterized in that fixed in the coordinate system associated with the bolt, the axis of swing of the handle move in the CCW system is dint, associated with the handle, along the arc of a circle whose center is at the end of a handle.
2. Working equipment for implementing the method according to claim 1, including a bolt, a handle rigidly mounted on the bucket, rope hoist bucket and the mechanism of pressure, wherein the pressure mechanism includes a rocker arm, which forms an arrow and a handle rotational pairs, and the hydraulic cylinder, the piston rod and the housing of which is pivotally connected with a yoke and handle accordingly.
SUBSTANCE: system includes bottom-hole, dumped and intermediate running fixed platforms connected by means of two running lines, two-sided bucket with V-bottom connected to each mast by means of hoisting-hauling line enveloping the corresponding sheave arranged between running lines with possibility of movement relative to each other together with running lines. Intermediate running fixed platform is equipped with two supporting sheaves of running lines and one supporting sheave of hoisting-hauling lines. Rotation axis of hoisting-hauling line sheave has the possibility of being moved along guide curves of running lines.
EFFECT: improving efficiency, reducing the wear of lines and improving environmental conditions owing to equipping the mast of intermediate running fixed platform with the most effective equipment.
SUBSTANCE: invention relates to the field of underground survey and production and is intended for measurement of properties of specific resistance of earth formations as they are penetrated through well. Combined tool for measurement of specific resistance includes both antennas of induction/propagation and antennas of side specific resistance arranged in grooves on well pipe. At the same time antenna of side specific resistance includes insulating basic layer arranged in groove, toroidal antenna arranged over insulating basic layer and protective device arranged over groove.
EFFECT: increased accuracy and reliability of measurement of underground specific resistance due to provision of combined measurement of specific resistance, using side sensor and sensor of induction or propagation in one and the same area of bed in a single trip.
18 cl, 20 dwg
SUBSTANCE: invention refers to mining and can be implemented at open development of mineral deposits by non-transport system in complicated mining and geological conditions. The stripping aggregate consists of face and dumping non-rotary carrier platforms with masts interconnected with two running cables, and of a double-sided bucket with a bottom of V-shape coupled with each mast by means of a lift-and-drag cable enveloping a corresponding block installed between the running cables. The block of the face non-rotary platform is rigidly tied with the first running cable and is connected to the second running cable; it travels along this cable relative to the block of the non-rotary dumping carrier platform together with the second running cable. The block of the dumping non-rotary platform is rigidly tied with the second running cable and is connected to the first running cable; it travels along this cable relative to the block of the non-rotary face carrier platform together with the first running cable.
EFFECT: raised efficiency of stripping aggregate and reduced wear of cables.
SUBSTANCE: invention refers to mining and can be implemented in open pits of mineral deposits for transporting excavated mass. The method consists in communicating horizons with a carrying flexible link, in securing capacities to the flexible link; also these capacities can freely travel; in connecting the capacities with a flexible pulling link, in equipping it with a balloon, and in loading capacities at final horizons. Also unloading of capacities is performed at intermediary horizons situated between stations of loading of upper and lower horizons, notably, the distance between stations of loading and unloading of each horizon is uniform; the balloon is fastened to the capacity of the upper horizon; lifting of excavated mass is performed from the lower horizon by means of aerostatic force of the balloon, while lowering excavated mass from the upper horizon is performed by means of gravitation force of excavated mass of the upper horizon and empty lower capacity. Also there is suggested the device for implementation of the method.
EFFECT: facilitating transporting excavated mass from hard accessible places with narrow slopes.
2 cl, 1 dwg
SUBSTANCE: invention relates to mining, in particular, to navigation system of combined cutter-loader intended for operations in open-pit bench. This mining equipment includes a combined cutter-loader, a conveyor assembly, and a steering assembly, which joins said combined cutter-loader and conveyor assembly. In addition, this equipment includes a course sensor and a steering device, which is sensitive to signals from said course sensor. The first drive is located in combined cutter-loader, in conveyor assembly, or in steering assembly. The first drive is placed on one side of combined cutter-loader centreline. In addition, the second drive is located either in combined cutter-loader, or in conveyor assembly, or in steering assembly. The second drive is placed on another side of combined cutter-loader centreline. The first and the second drives are used to adjust angle of joint between combined cutter- loader and conveyor assembly on either side of parallel line in order to keep pre-defined direction of combined cutter-loader advancing.
EFFECT: precise driving of combined cutter-loader in order to increase coal cutting from mining zone.
22 cl, 13 dwg
FIELD: engines and pumps.
SUBSTANCE: invention relates to excavator electrical drives and allows increasing the service life of traction motors. The transfer station electrical drive is designed to provide for transfer of excavators and drilling machines in open pits with the power supply cable disconnected from the supply circuit. The proposed device is a separate electrical drive per every traction motor configured as a "generator-motor" assembly controlled by the PPD-1.5V-type power magnetic amplifier.
EFFECT: longer life of the motor.
FIELD: mine winding plants, particularly to lift skips and cages from deep mines and pits.
SUBSTANCE: tractive tool is made as flexible flat band having trapezoid shape and constant thickness. Flexible flat band width varies in accordance with predetermined algorithm. The band has minimal width in area of band connection with lifting tank.
EFFECT: possibility to increase winding plant capacity for reduced tractive tool weight value.
2 cl, 4 dwg
FIELD: mining, particularly to perform stripping and mining in pits with 6-8 crushing index.
SUBSTANCE: method involves filling previously created trench with rock loosened with milling machine, wherein loosened rock is poured in the trench from which said rock had been excavated. In the case of conveyer deactivation device usage rock is left in open trench just after rock cutting with milling means. After that rock is scooped with scrapers following pit machine without pit machine stopping.
EFFECT: increased open-pit work efficiency due to decreased milling machine downtime during rock mining.
2 cl, 1 ex, 4 dwg
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.
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.
FIELD: open-cast mining.
SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.
EFFECT: improved operating capabilities of device.
5 cl, 5 dwg
FIELD: mining 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: 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.
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.
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: 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: 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: 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: 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: 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