Hydro-system for controlling caterpillar drive of mining machine

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.

1 dwg

 

The invention relates to the field of mining engineering and can be used in the construction of mining machines and other machinery.

A known hydraulic system of the harvester "Karaganda-7/15" (M.: Nedra, 1974, AIESEC, Vignudelli, Ulakov, "Tunneling machines", str, RES), which contains an adjustable pump that allows you to change the speed of travel of the harvester. The pump is equipped with a control mechanism consisting of a cylinder and servo valve, in addition, the pump has two check valves and two pressure relief valve. Control system pump comprises a gear pump, two filters, pressure valve, cylinder zero-installer and the choke knob.

The disadvantages of this hydraulic system is the presence of complex control equipment adjustable pump and the inability to move the harvester when the failure of any of the pumps.

The closest technical solution adopted for the prototype, is the hydraulic digging machine PC - 10 (M.: Nedra, 1973, Vfrancaise, Nteresnaja, Wheelin, "Handbook of hydraulic mining machines", str, 445, RIS), which allows you to get a six speed drive crawler.

The disadvantage of the hydraulic system of the prototype is that to change the speed of movement of the harvester is equipped with a pump, t is AMA distributors control and throttle knob, what complicates the hydraulic system as a whole, reduces efficiency and makes it difficult to manage. In the event of pump failure the harvester is unable to move.

The present invention is the ability to move the mining machine when the failure of both pumps drive the crawler and the change in the speed of its movement without the use of complex distribution and control equipment by supplying the working fluid from the pump, the supply system of the operational functions of the mining machine.

The inventive hydraulic control actuator crawler mining machines, containing pumps drive crawler and pump feeding system working functions of the machine, the valves for controlling the drive crawler, drive motors and the working line, further provided with a controllable non-return valves and valve control system of the working machine functions, and input channels controlled non-return valves are connected, and the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels driven back Klah is ANOVA.

Comparison of the inventive hydraulic control actuator crawler mining machines with the prototype allows you to make out about the absence of the latter characteristic, similar to the main feature of the inventive hydraulic control actuator crawler mining machines.

The hydraulic actuator control crawler mining machine is further provided with a controllable non-return valves and valve control system of the working machine functions, and input channels controlled non-return valves are connected, and the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels controlled non-return valves.

The claimed technical solution is different from the prototype and should not be explicitly studied the prior art, therefore, the authors believe that the object is new and involves an inventive step.

The proposed solution involves an inventive step in view of the fact that the hydraulic drive control crawler mining machine is further provided with a controllable non-return valves and valve control is of system operating functions of the machine, moreover, the input channels controlled non-return valves are connected, and the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels controlled non-return valves.

When Troubleshooting this characteristic disappears produced by the invention of the technical result. The invention is also a definite step in the development of technology and is progressive, as it provides the ability to move the mining machine when the failure of both pumps drive crawler and change speed without the use of complex distribution and control equipment by supplying the working fluid from the pump, the supply system of the operational functions of the mining machine.

The hydraulic actuator control crawler, which stated the invention may find wide application in the mining industry and other sectors of the economy, i.e. is industrially applicable technical solution.

The achievement of the technical result, the hydraulic actuator control tracked the progress achieved by the fact that it is additionally equipped with a controlled reverse the valve and the valve control system of the operational functions of the machine, moreover, the input channels controlled non-return valves are connected, and the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels controlled non-return valves.

This design provides the ability to move the mining machine when the failure of both pumps drive crawler and change speed without the use of complex distribution and control equipment by supplying the working fluid from the pump, the supply system of the operational functions of the mining machine.

The essence of the invention is illustrated attached drawing, which shows a diagram of a hydraulic drive control crawler mining machines.

The hydraulic actuator control crawler mining machine includes a pump drive crawler 1, 2, pump feeding system working functions of the machine 3, the valves for controlling the drive crawler 4, 5, the drive motors 6, 7, worker highway 8, 9, 10, 11, and further provided with a controllable non-return valves 12, 13 input 14, 15, 16, 17 and outlet 18, 19, 20, 21 channels, the valve control system of the RA is ocij functions of the mining machine 22 with output channels 23, 24.

The hydraulic actuator control crawler mining machines as follows. When you enable pump drive crawler 1 and 2, the working fluid is supplied to the valves 4 and 5. If the spools of these getorcreate are in the neutral position, fluid is freely discharged into the tank. When switching spools of the control valves 4 and 5 in the working position the fluid on the working routes 8, 9, 10 and 11 is supplied to the drive motors 6 and 7 and is taken away from them. Depending on the position of the spools of the valves 4 and 5, the machine can move forward, backward or turn with the operating speed provided by the pump drive crawler 1 and 2.

When the pump feeding system working functions of the machine 3, the working fluid is supplied to the valve 22. If the control valve spool 22 is in the neutral position, the working fluid enters the system of the working machine functions. When switching the control valve spool 22 in the operating position similar to the position of the spools of the valves 4 and 5, the following occurs. The working fluid from the pump 3 through the control valve 22 to the output channels 15 and 16, connected between themselves, will fall into the cavity managed reverse the x valves 12 and 13, designed to synchronize the operation of the drive motors 6 and 7. Of oral controlled valve 12 via the output channel 19 half of the working fluid flow from the pump 3 is supplied to the working line 9, where it is summed with the flow of the working fluid from the pump 1, and further provides power to the drive motor 6. The drain in the tank of the hydraulic motor 6 is working on highway 8 through the control valve 4.

Of oral controlled valve 13 via the output channel 20 in the second half of the working fluid flow from the pump 3 is supplied to the working line 10, where it is summed with the flow of the working fluid from the pump 2, and then performs the power motor 7. The drain in the tank of the hydraulic motor 7 is produced on the working line 11 through the control valve 5.

The sum of the flows of the working fluid increases the speed of the machine to maneuver.

In case of failure of the pump drive crawler machines 1 and 2 when the pump system operating functions and the working position of the control valve spool 22 to provide a minimum (emergency) travel speed of the machine than is achieved problem solving: the ability to move the mining machine when the failure of both pumps drive crawler x is Yes and change the speed without the use of complex distribution and control equipment by supplying the working fluid from the pump, the supply system of the operational functions of the mining machine.

The hydraulic actuator control crawler due to the fact that is further provided with two controlled non-return valves and valve control system of the working machine functions, and input channels controlled non-return valves are connected, and the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels controlled non-return valves, provides the ability to move the mining machine when the failure of both pumps drive crawler and change speed without the use of complex distribution and control equipment by supplying the working fluid from the pump feeding system of the operational functions of the mining machine.

The hydraulic actuator control crawler mining machines, containing pumps drive crawler and pump feeding system working functions of the machine, the valves for controlling the drive crawler, drive motors and the working line, characterized in that the hydraulic drive control crawler mining machines will complement the flax has two controlled non-return valves and valve control system of the operational functions of the machine, moreover, the input channels controlled non-return valves are connected, the output channels of these valves communicated with workers highways drive motors and valves for controlling the drive crawler and output channels of the valve control system of the operational functions connected with the input channels controlled non-return valves.



 

Same patents:

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.

4 dwg

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: 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.

2 dwg

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: 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.

4 dwg

The invention relates to earth-moving machinery, namely the hydraulic working bodies scraper

The invention relates to the construction and mining technique, namely, to drive vehicles cyclic actions

The invention relates to the construction and mining technique and can be used, for example, in a single bucket excavators

The invention relates to loaded, earthmoving, mining and other lifting-transport machines cyclic actions

The invention relates to the field of building and road machines, namely, the front shovel loaders

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.

4 dwg

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.

2 dwg

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.

4 dwg

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.

1 dwg

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.

3 dwg

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.

9 dwg

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.

1 dwg

Up!