Collector of bulldozer equipment of earth mover
SUBSTANCE: collector of bulldozer equipment of an earth mover is proposed, which comprises a body with radial holes for supply and discharge of working fluid, connected as capable of rotation and axial displacement with a blade frame. Inside the body there is a part of a fixed core, installed with a gap into eyes of the blade frame and stopped by the other part against rotation in a lever of a blade lifting mechanism. Besides, the body is equipped with a leash element with a through slot. The fixed core is made with circular grooves for installation of seals and circular bores, communicated with radial holes of the body and channels of supply and discharge of working fluid in the lever of the blade lifting mechanism and axial channels for transfer of working fluid from the lever of the blade lifting mechanism to the blade frame. At the same time the specified axial channels are closed with plugs with seals at the end side of the core and are pressed with a flange on bolts. Connection of the body with the blade frame is carried out by means of a threaded element screwed into the blade frame and stretching via the central axial hole installed into a cut slot of the leash element, a stop made in the form of a four-face rod with a base in the form of a square, with a support site perpendicular to its faces. Between the leash element and the stop in the radial direction there is a gap, the value of which is more than the total value of gaps between the outer surface of the core and inner surfaces of the blade frame eyes. Height from the surface joined with the blade frame to the support site of the stop is more than the thickness of the leash element, and the width of the stop is less than the width of the slot of the leash element.
EFFECT: increased operational resource of a collector due to elimination of direct transfer of loads from a movable part of a machine towards a fixed one.
The invention relates to the field of transport engineering, namely the volumetric pneumatic-hydraulic special, mobile construction and road machines, and is designed to swivel pipelines that are moving relative to one another the parts of the machine.
Known Central collector for swivel piping (RF patent No. 2052704), located on the movable relatively one to the other parts of the machine, comprising a movable body with a flange for fastening and snap ring grooves for the passage of fluid and sealing, a stationary core with axial channels and leash to drive the stationary core.
In the known device bolted to the stationary core leash connects it with the movable part of the machine - rotary platform and rigidly secures them against relative displacement.
Given that free rotation relative to each other, coaxially arranged one inside the other parts of the machine, when radial and axial loads between them should be at least a minimal radial and axial clearance, to the disadvantage of the known collector should include rigid body and core on a common axis of rotation, resulting in part of the collector in the transfer of operational efforts through the leash from the movable part of the machine (stand the company of the platform) to fixed (core) and, as a consequence, to increased operational wear of the collector due to the friction of its working surfaces under load, therefore reducing its resource.
Given the lack of specific collectors installed on the machines, interconnected open-friction bearings operating in an abrasive environment, with high loads, for example, the collector dozer equipment.
Task to be solved by the present invention is directed, is the creation of the sewer design for swivel pipelines that are moving relative to one another the parts of the machine, allowing to eliminate the direct transfer of loads from the movable to the stationary part of the machine and reduce operational wear of the collector.
This task is solved in that the collector dozer equipment earthmoving machine comprising a blade, a frame of the blade, the lever mechanism of the lifting blade with channels for supplying-discharging working fluid, the hydraulic cylinders control the blade, which is the common axis for the movable relatively one to the other parts dozer equipment - frame blade and lever mechanism for raising the blade, according to the invention, includes a housing with radial holes for the supply of fluid withdrawal, coupled with the possibility of rotation and axial p the motion to the frame of the blade, inside there is a part of the stationary core, passing with clearance through the eyes of a frame of the blade, and the other part is locked from rotation in the arm of the lifting mechanism of the blade, while the body is equipped with powered element with a through groove, the fixed core is made with annular grooves for sealing, annular grooves communicated with the radial holes of the casing and channels supply, drainage of fluid in the arm of the lifting mechanism of the blade, axial channels for transferring the working fluid from the lever of the lifting mechanism of the blade to the frame of the blade, seal, and connection of the case to the frame of the blade made by screwed into the frame of the blade threaded element, passing through the Central axial hole, is installed in the slit groove powered element, the emphasis made in the form, for example, square rod with a base in the form of a square, perpendicular to its faces, the reference area, and between the drive element and focusing in the radial direction there is a gap the size of which is larger than the total size of the gaps between the outer surface of the core and the inner surfaces of the lugs of the frame of the blade, the height from the surface mating with the frame of the blade to the supporting point of focus greater than the thickness powered element, and the width of the stop is less than the width of the groove powered element.
The declared technical features are significant because they affect the technical result achieved.
The study of other known technical solutions in this field of technology the features distinguishing the claimed technical solution, have not been identified. This allows us to conclude that the claimed technical solution is new and not obvious from the current level of technology.
The proposed solution can be applied in pneumatic and hydraulic actuators special, mobile construction and road machines.
The invention is illustrated by drawings, where: figure 1 shows a fragment of dozer equipment earthmoving machine; figure 2 shows a section a-a figure 1; figure 3 shows a view B figure 2; figure 4 shows in cross section view In figure 3.
Collector dozer equipment earthmoving machine 1 includes a blade 2, the frame 3 of the blade, the lever mechanism 4 5 raising the blade with 6 channels for the supply of fluid withdrawal, the hydraulic cylinder 7 blade control 2, the hydraulic cylinder 8, performing the rotation of the frame 3, includes a housing 9 with radial holes 10 for the supply of fluid withdrawal, coupled with the possibility of rotation and axial movement with the frame 3 of the blade. The housing 9 is provided with a drive element 11 with a through groove. Inside the housing 9 is part of the motionless heart is cnica 12, installed with a gap G in the lugs of the frame 3 of the blade and secured by the pin 13 from rotating in the lever mechanism 4 5 raising the blade. The stationary core 12 is made with an annular groove 14 for installation of the seals 15 and annular grooves 16 provided with a radial hole 10 of the body 9 and the channels 6 approach-retraction of the working fluid in the lever mechanism 4 5 lifting blade, and includes an axial channels 17 for transferring the working fluid from the lever mechanism 4 5 raising the blade to the frame 3 of the blade, which with the end faces of the core 12 are closed by plugs 18 with seals 19 are tightened flange 20 on the bolts 21. The connection of the case 9 to the frame 3 of the blade made by screwed into the frame of the blade screw element 22, passing through the Central axial hole 23 that is installed in the slit groove powered element 11, the stop 24, made in the form, for example, square rod with a base in the form of a square, perpendicular to its faces, the reference area, and between the drive element 11 and the stop 24 in the radial direction, a gap D, the value of which is larger than the total size of the gap G between the outer surface of the core 11 and the inner surfaces of the lugs of the frame 3 of the blade, the height of W from the surface mating with the frame blade to the supporting point of focus 24 greater than the thickness of 3 powered ele is enta 11, and the breadth And emphasis To less than the width of the groove powered element 11, which prevents the direct transfer of labour dozer equipment through the frame 3 and pedestrian element 11 on the stationary core 12 and reduces the wear of the working surfaces of the collector.
The device operates as follows.
The working fluid of the pneumo-hydraulic (and back) through the channels 6 of the lever 4, the axial channels 17 and the annular groove 16 of the core 12, the radial holes 10 of the body 9 through pipelines is supplied to the hydraulic cylinder 7, managing blade 2 and the cylinder 8, performing the rotation of the frame 3 of the blade along with fixed on her body 9 relative to the core 12, is locked in a stationary lever 4. When working dozer equipment housing 9, through the gaps (gap D, the difference of the dimensions W and H), is at the core 12 position (can move in the axial and radial direction within these clearances), precluding direct contact (friction between the working surfaces of the collector.
Thus, due to the simplicity of mounting powered element of the collector housing, the availability of guaranteed gaps, eliminating direct contact of the working surface of the collector, the application of this invention will increase the service life of the collector.
Collector bulldozer equipment is of earth-moving machines, includes blade, frame, blade, lever mechanism for raising the blade with channels for supplying-discharging working fluid, the hydraulic cylinders control the blade, which is the common axis for the movable relatively one to the other parts dozer equipment - frame blade and lever mechanism for raising the blade, characterized in that it includes a housing with radial holes for the supply of fluid withdrawal, coupled with the possibility of rotation and axial movement with the frame of the blade is located within the portion of the stationary core, passing with clearance through the eyes of a frame of the blade, the other part is locked from rotation in the arm of the lifting mechanism of the blade, while the case is equipped powered element with a through groove, the fixed core is made with annular grooves for sealing, annular grooves communicated with the radial holes of the casing and channels supply, drainage of fluid in the arm of the lifting mechanism of the blade and the axial channels for transferring the working fluid from the lever of the lifting mechanism of the blade to the frame of the blade, which closed with plugs with seals with the face side of the core and flange are tightened on the bolts, and the connection of the housing to the frame of the blade made by screwed into the frame of the blade threaded element passing through the Central axis is twistie, installed in the slit groove powered element, the stop is made in the form of a square rod with a base in the form of a square perpendicular to its faces, the reference area, and between the drive element and focusing in the radial direction there is a gap the size of which is larger than the total size of the gaps between the outer surface of the core and the inner surfaces of the lugs of the frame of the blade, the height from the surface mating with the frame of the blade to the supporting point of focus greater than the thickness powered element, and the width of the stop less than the width of the groove powered element.
SUBSTANCE: working mechanism comprises basic mechanism, cab and cab manipulator articulated with basic mechanism designed to change the cab position relative to said basic mechanism. Note here that cab manipulator is equipped with at least one hydraulic actuator to turn the cab about horizontal axis relative to basic mechanism. Note here that said cab id coupled with said manipulator to allow the turns actuated by tilt control hydraulic drive. Besides, said working mechanism includes the cab emergent exit system incorporating one emergent tilt valve for cab tilt adjustment device designed to orient the cab in normal position in emergent exit.
EFFECT: reliable escape of engineman cab.
9 cl, 3 dwg
SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil and moisture separator and a receiver, pneumatically serially connected to each other. At the same time the outlet of the receiver is pneumatically connected to inlets of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a load. The compressor is equipped with a suction filter, comprising a casing with a conical bottom, a nozzle of cleaned air exhaust, a condensate extractor, installed in the bottom hole, a reflecting partition and a nozzle of cleaned air supply. The filter casing is made in the form of a double-layer jacket with an air cavity connected by the nozzle of heating regenerated air supply by means of a pipeline and a control valve with adsorbers by a nozzle of heating regenerated air discharge into atmosphere. Evenly distributed heaters in adsorbers are separated by partitions from adsorbent grains. At the same time each of the partitions is made of a bimetal. Besides, the material of the bimetal at the side of the heater has a conductivity ratio that is 2.0-2.5 times higher than the material at the side of adsorbent grains.
EFFECT: maintenance of efficient operation during long-term operation of a control device of lifting-digging mechanisms, by provision of specified quality of compressed air drying due to elimination of thermal damage of adsorbent grains.
SUBSTANCE: fluid-controlled slide valve is arranged between load mechanism hydraulic cylinder rod end and pressure valve inlet line. Control chamber of said valve is communicated with front shutter drive hydraulic cylinder chamber for it to be closed.
EFFECT: independent operation of hydraulic cylinders.
SUBSTANCE: device to control lifting-digging mechanisms comprises a compressor, an oil separator and a receiver, which are pneumatically connected to each other in series. The outlet of the receiver is pneumatically connected to inputs of adsorbers with evenly distributed heaters, and outlets of adsorbers are pneumatically connected to a consumer. The compressor is equipped with a suction filter. The filter is made in the form of a double-layer jacket with an air cavity, connected by a nozzle of input of heating regenerated air. Adsorbers are equipped with a thermoelectric generator comprising a through channel for regenerated air and a through channel for dried compressed air, inside of which there are accordingly hot and cold ends of a set of differential thermocouples.
EFFECT: reduced power inputs when producing compressed air of specified quality for a device of lifting-digging mechanisms control.
SUBSTANCE: pump-accumulator hydraulic drive to rotate an earth-mover platform comprises a controlled pump, hydraulic distributors, safety and check valves, a hydraulic accumulator, a relay controller, connected to each other by hydraulic manifolds, and a controlled hydromotor. At the same time one of hydraulic distributors is installed between the controlled pump and the controlled hydromotor of platform rotation. Safety valves are valves with two adjustment pressures. The second hydraulic distributor is arranged between the controlled pump and the first hydraulic distributor, serving to change power streams from the controlled hydraulic pump to the hydraulic accumulator.
EFFECT: maximum use of kinetic energy of a rotary platform, reduced wear and lower loads in a mechanism of earth-mover platform rotation, reduced quantity of hydraulic scheme elements.
FIELD: machine building.
SUBSTANCE: proposed device comprises first and second engine openings communication L' and N' for communication with two-way hydraulic motor D, and openings M' and O' for communication with manual-control valve H. Besides, valve device comprises normally-closed proportioning load-adjustment valve E and check valve 12 with outlet communicated with aforesaid second opening N' and inlet communicated with opening O'. Note here that check valve 12 is pre-stressed for opening solely in case its inlet exceeds preset pressure range.
EFFECT: higher reliability.
1 cl, 7 dwg
FIELD: machine building.
SUBSTANCE: proposed device comprises first and second openings L and N in two-way hydraulic motor D, tank T, pump I, manual valve H and first retaining valve 1A, 8. Note here that manual valve is arranged to communicated openings L, N with tank T and pump I. Note here said valve H has two positions. In first position, pump I is communicated via pipeline F with first opening L while tank T communicates via pipeline G with second opening N. In second position, pump I communicates via pipeline G with second opening N while tank T is communicated via pipeline F with first opening L. Note here that first retaining valve 1A, 8 is arranged between pump I and second opening N to open toward second opening N. Besides, device comprises piston 2 to control first retaining vale 3 arranged to communicate first opening L with second opening N and to open toward second opening N.
EFFECT: higher efficiency.
9 cl, 6 dwg
FIELD: machine building.
SUBSTANCE: method of controlling working mechanism includes the following stages: determination of maximum pressure of hydraulic fluid for independent fulfilment of certain task for, at least, one of operating functions; hydraulic fluid supply which pressure does not exceed certain maximum pressure for fulfilment of this operating function; and fluid pressure control with the aid of, at least, one control valve as pressure reducer connected with this operating function.
EFFECT: increase of operation efficiency in condition of large loads at mechanism operating component.
26 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: proposed system comprises first assembly of actuators to control first hydraulic function, pump to feed hydraulic fluid at pressure into said actuators, electrically control valve to control pump discharge pressure by hydraulic signal, first pressure transducer to measure load pressure of the said first assembly of actuators, and control unit to receive signal containing data on load pressure measured by first pressure transducer and to generate control signal corresponding to first measured load pressure to be transmitted to said control valve. Note here that control unit allow determining required pump pressure so that difference between measured load pressure and pump pressure varies depending upon operating conditions.
EFFECT: higher efficiency of control.
18 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: proposed system comprises, at least, one hydraulic cylinder to handle cargoes, accumulator and valve to control flows between said cylinder and said accumulator. Note here that said system comprises first control valves arranged on tube connected to hydraulic cylinder piston side, second control valve arranged on tube connected to cylinder rod side, first hydraulic cylinder pressure transducer, second accumulator pressure transducer, and control unit. Note also that control unit receives signals containing data on pressures measured by aforesaid transducers and to generate signals to control damping control functions. Invention covers also method of damping working tool comprising measuring accumulator and hydraulic cylinder pressures, and controlling damping functions in compliance with measured pressures. Note here that pressures between accumulator and cylinder piston are equalised and flow between accumulator and tank are controlled by control valve arranged on tube secured to hydraulic cylinder piston side.
EFFECT: higher efficiency.
37 cl, 2 dwg
FIELD: earth-moving facilities; hydraulic drives of scraper working members.
SUBSTANCE: proposed hydraulic drive contains pressure spool installed in parallel with like spaces of two hydraulic cylinders, pressure main line connected between two check valves, free outlet of check valve being connected with inlet of pressure spool and one hydraulic cylinder. Free inlet is connected with outlet of pressure spool and other hydraulic cylinder, drum main line connects opposite spaces of hydraulic cylinders. Hydraulic drive is furnished with two series-connected pressure spools. Inlet of first pressure spool and outlet of second pressure spool are connected with outlet of first hydraulically controlled reversible spool. Their common line is connected with controllable space of second hydraulic cylinder and is separated by check valve from pressure main line. Inlets of first hydraulically controlled reversible spool are connected to outputs of second hydraulically controlled reversible spool and are connected with controllable spaces of first and second hydraulic cylinders. One inlet of second hydraulically controlled reversible spool is connected with inlet of pressure spool and is connected to pressure line through check valve, and second inlet is separated from pressure line by other check valve. Control spaces of two hydraulically controlled reversible spools are united and are connected to pressure main line through two-position spool.
EFFECT: improved efficiency of control of scraper blade system.
FIELD: handling machinery, particularly soil-shifting, mining, agricultural and loading cyclic machines.
SUBSTANCE: device includes implement, main hydraulic cylinders and balancing hydraulic cylinder, at least one gas cylinder and hydropneumatic accumulator, main and additional hydrodistributors, as well as safety valve. Gas cylinder communicates with gas chamber of hydropneumatic accumulator. Device made in the first embodiment has the second additional hydrodistributor connecting working chambers of the main hydraulic cylinders with each other and with pump. Rod end of balancing hydraulic cylinder communicates with rod ends of the main ones. In the second embodiment additional hydraulic cylinder is arranged in main hydrodistributor case and connected to hydrolines of the main hydraulic cylinders through hydrolines. Additional hydrodistributor is installed so that additional hydrodistributor may connect working chambers of the main hydraulic cylinders with each other and with the pump when additional hydrodistributor is installed in the first position. Additional hydrodistributor being installed in the second position may connect working chambers of main hydraulic cylinders with each other and with drain. Rod end of balancing hydraulic cylinder is connected with rod ends of main hydraulic cylinders.
EFFECT: increased machine productivity due to increased implement hoisting speed.
3 cl, 4 dwg
FIELD: mechanical engineering, particularly hydraulically driven dredgers.
SUBSTANCE: drive comprises power plant with controlled power pumps having servo control taps, gear-box, hydraulic motors and hydraulic equipment. Hydraulic equipment has hydraulic distributor with address travel spool and its servo control taps, power hydraulic lines and servo control loop with hydraulic lines. The controlled power pumps may supply predetermined volume of working liquid at zero pressure in servo control lines thereof. Hydraulic lines for servo control of address travel spool have additional circuit including control unit, servo control lines and logical hydraulic OR valve with two inlet and one outlet taps. Hydraulic lines of servo control circuit included in additional loop are connected with inlet taps of hydraulic OR valve having outlet tap communicated with servo control taps of address travel spool.
EFFECT: provision of no-failure gear actuation in standing still dredger.
FIELD: mechanical engineering, particularly hydraulic systems for mobile machines.
SUBSTANCE: hydraulic system comprises hydraulic reservoir, controllable hydraulic pump with load-sensitive control slide, power hydraulic line protected with safety valve, main hydraulic distributor with three-position slide having one pressure supply means, two discharge lines, two working outlet means and line, which provides connection of each working outlet means with LS line, attached to control slide. The hydraulic system is provided with pressure control valve and with controllable reducing valve installed in LS line. Input and output of reducing valve are connected to hydraulic distributor and control slide correspondingly. Control line of reducing valve is linked to pressure control valve outlet. Inlet and discharge line of the pressure control valve are connected with power hydraulic line and with hydraulic reservoir correspondingly.
EFFECT: increased operational efficiency and reliability.
7 cl, 1 dwg
FIELD: earth-moving, mining, building machines and other wheeled and caterpillar handling periodically acting machines.
SUBSTANCE: device comprises working implement, main and balancing hydraulic cylinders, gas cylinder, main and additional working liquid distribution means. The piston cavity of balancing hydraulic cylinder is connected with gas cylinder. Additional distribution means may connect working cavities of main hydraulic cylinders one with another and with hydraulic pump during implement lifting.
EFFECT: increased working implement lifting speed without pump and system parameter change.
FIELD: mining industry, mechanical engineering, possible use in system for controlling caterpillar drive of mining machine.
SUBSTANCE: hydro-system contains pumps for caterpillar drive and pump, feeding system of working functions of machine, hydro-distributors for controlling caterpillar drive, driving hydro-motors and working mains, two controllable check valves and hydro-distributor for controlling system of machine working functions. Outlet channels of hydro-distributor for controlling system of machine working functions are connected to inlet channels of controllable check valves, which are connected between each other. Outlet channels of these valves are connected to working mains of driving hydro-motors and hydro-distributors for controlling caterpillar drive.
EFFECT: possible movement of mining machine in case of breakdown of driving pumps at the expense of influx of working liquid from pump driving system normally used for working functions of machine.
FIELD: earth moving machinery.
SUBSTANCE: invention relates to hydraulic drives of draw-booster gears of tractor-drawn scrapers. Proposed hydraulic drive contains pump, hydraulic tank, hydraulic cylinder, pressure valve connected in parallel with hydraulic cylinder, and hydraulic distributor. Hydraulic drive contains additionally hydraulic accumulator, time relay, check valve, pressure valve is provided with control line, and hydraulic cylinder has control arm engaging with two-position spool whose input is connected with pump and output, through time relay, with hydraulic accumulator and control line of pressure valve and with input of check valve whose output is connected to input of pressure valve.
EFFECT: provision of automatic continuous increase of adhesion weight of tractor of scraper when digging.
FIELD: earth-moving and transport machines, particularly blade assemblies having changeable width of cut.
SUBSTANCE: blade assembly comprises side sections and central section. The sections are provided with undercutting blades and are directly connected to bucket bottom. The central section is hinged to bucket bottom and is operated by rotation hydraulic cylinders through operation levers. Undercutting blades made as gussets are connected to inner edges of side sections from below. The gussets have supports to cooperate with central section in lower position thereof. Undercutting blades of central section are connected to outer side edges of central section. Undercutting gussets are provided with orifices to arrange fixers installed in lower parts of side sections so that they may cooperate with end switches. Position switches adapted to cooperate with operation levers of central section in central or extreme positions are mounted on bucket side walls. Hydraulic cylinders for central section rotation are linked in pairs to hydraulic cylinders for bucket operation. Lifting and lowering cavities of hydraulic cylinders are correspondingly communicated with raising and deepening cavities of hydraulic cylinders for central section rotation. Hydraulic drive for blade assembly includes hydraulically operated on-off three-way slide. The first outlet of the slide is united with the third one and is linked to raising cavity of hydraulic cylinder for central section rotation. Operational chamber and the first inlet of the slide are connected to outlet of pressure slide having output connected to lowering cavities of hydraulic cylinders for bucket operation. The second and the third inlets of on-off three-way slide are correspondingly connected to lifting cavities of hydraulic cylinders, which operate front bucket gate and lowering cavity of hydraulic cylinders for bucket operation.
EFFECT: decreased load to be applied to blade system during earth cutting as central section is in central and extreme positions, provision of automatic installation of above section in side blade plane and in extreme positions.
FIELD: mechanical engineering.
SUBSTANCE: group of invention relates to boom earth-moving, mine, construction and loading lifting-and-transporting machines of cyclic action. Proposed balancing system contains working equipment, boom hydraulic cylinders and balancing cylinder including hydraulic rod space and gas piston space connected with gas bottle, and distributors. According to first design version, hydraulic rod space of balancing cylinder is connected by hydraulic line with drain into hydraulic tank, and distributor of hydraulic liquid is installed for connecting in one position of spool, of boom hydraulic cylinders working spaces to each other with hydraulic pump. According to second design version, distributor is installed in system for connecting working spaces of boom hydraulic cylinders to each other and with hydraulic pump. According to third design version, rod space of balancing cylinder is connected with distributor installed for connecting, in one position of spool, of rod space of balancing cylinder with into hydraulic tank, and in other position, with hydraulic pump. Distributor is installed in hydraulic line of boom hydraulic cylinders for connecting, in one position of spool, of spaces of boom hydraulic cylinders to each other and with hydraulic pump.
EFFECT: increased capacity of machine owing to higher speed of lifting and lowering of working equipment.
5 cl, 6 dwg
FIELD: mechanical engineering, particularly earth-moving and construction equipment to be operated at low temperatures.
SUBSTANCE: device for hydraulic drive heating comprises heat engine and hydraulic pump kinematically connected with each other. Device also has liquid heat carrier circulation loop including heat accumulator. Heat pipe is connected to heat engine exhaust pipe through two-way valve. Heating member is arranged in tank and linked to heat engine generator.
EFFECT: increased simplicity and efficiency of hydraulic drive heating at negative ambient temperatures.