Energy-saving working equipment of excavator

FIELD: construction.

SUBSTANCE: device comprises a boom, a bucket, the main hydraulic cylinder of the boom, a balancing pneumatic hydraulic cylinder, a gas balloon. The main hydraulic cylinder of the boom and the balancing pneumatic hydraulic cylinder are located in a single longitudinal vertical plane of the boom symmetry, so that the balancing pneumatic hydraulic cylinder is brought to the boom as close as possible in the lower and upper limit positions of the working equipment. The boom base is arranged in the form of a box, where the balancing pneumatic hydraulic cylinder is installed, a piston cavity of which is connected to a gas balloon charged with pressure of more than 10 MPa. At the same time the volume of the gas balloon makes more than five working volumes of the balancing pneumatic hydraulic cylinder.

EFFECT: energy-saving and simplification of design.

2 dwg

 

The invention relates to construction machinery, namely the hydraulic shovel excavators.

Known energy-saving production equipment excavator [AC No. 1631137, BI No. 8, 28.02.1991,]containing the boom, arm, bucket, main boom cylinder, an additional regenerative hydraulic, hydropneumatic accumulator, valves, hydraulic valve.

The disadvantages of the device are the power imbalance of the main cylinder of the boom and additional regenerative hydraulic cylinder, which is installed next, symmetrically about the vertical plane of symmetry of the working equipment. Such installation of the main cylinder of the boom and additional regenerative cylinder leads to distortion of the working equipment in the transverse plane due to the different efforts in these cylinders.

Another disadvantage of the design is the design complexity due to the use of the device pneumohydroaccumulators and a complex system of hydraulic valve.

The closest in technical essence of the known technical solutions of the present invention is a power-saving operating equipment excavator [Patent No. 2190062, BI No. 27, 27.09.2002,]containing the boom, arm, bucket, main cylinder balancing cylinder,gas cylinder, the hydropneumatic accumulator.

The disadvantage of this device is the presence of a hydropneumatic accumulator, which is complex, expensive device and the complicated construction of a drive system of work equipment.

The objective of the invention is the creation of a rational layout of the main cylinder of the boom and balancing pneumohydraulic, providing energy savings and simplification of the structure.

The invention consists in balancing the forces of gravity working equipment balanced pneumomediastinum, piston chamber which is connected to the gas bottle, charged with nitrogen to a pressure of more than 10 MPa, and in the establishment of a rational scheme of installation of the main cylinder of the boom and balancing pneumohydraulic, the volume of gas equals more than five working volume balancing pneumohydraulic.

The task of the invention is solved due to the fact that in the known device, comprising a boom, a bucket, a main hydraulic cylinder shafts, balancing pneumohydraulic, gas cylinder, according to the invention the main boom cylinder and balancing pneumohydraulic are in a longitudinal vertical plane of symmetry of the arrows, so that an equilibrium pneumohydraulic Mack the distribution panel is minimal close to the arrow in the lower and upper limit positions of the working equipment, while the base of the boom is made in the form of a box, in which is mounted a balancing pneumohydraulic, piston chamber which is connected to the gas cylinder, the charged pressure of more than 10 MPa, the volume of gas is equal to more than five working volume balancing pneumohydraulic.

The proposed invention provides an energy-saving at work by balancing the forces of gravity of the boom, stick, bucket and has a compact design.

Figure 1 shows the energy saving of the working equipment of wheeled excavator, figure 2 tracked excavator.

The invention provides an arrow 1, bucket 2, the main hydraulic cylinder 3 arrows, balancing pneumohydraulic 4, piston chamber which are connected by hydroline with a gas cylinder 5. The base of the boom 1 is made in the form of a box, in which is mounted a balancing pneumohydraulic.

Energy-saving production equipment is characterized by the following parameters. The volume of the gas cylinder is more than five working volume balancing pneumohydraulic, i.e. chosen so that when lifting and lowering the boom pressure in a gas cylinder remained almost constant. In the balancing forces of gravity of the boom, stick, bucket eliminating their harmful effects on the binding energy is emkosti workflow.

When the extension rod of the main cylinder 3 is the rise of working equipment with bucket 2. At the same time balancing pneumohydraulic 4, piston chamber which is connected to the gas cylinder 5, provides the balancing force of gravity of all items of work equipment.

Therefore, when raising the boom 1 and bucket 2 with a useful load of the engine power and fuel are expended only on the rise of the payload.

The proposed design of the arrows and axial location of the main cylinder of the boom and balancing pneumohydraulic provide a compact design and reliable operation.

Energy-saving production equipment shovel excavator containing the boom, the bucket, the main hydraulic cylinder shafts, balancing pneumohydraulic, gas cylinder, wherein the main boom cylinder and balancing pneumohydraulic are in the same longitudinal vertical plane of symmetry of the boom so that the balancing pneumohydraulic as close to the arrow in the lower and upper limit positions of the working equipment, the base of the boom is made in the form of a box, in which is mounted a balancing pneumohydraulic, piston chamber which is connected to the gas cylinder, the charged pressure is m ore than 10 MPa, the volume of gas is more than five working volume balancing pneumohydraulic.



 

Same patents:

FIELD: construction.

SUBSTANCE: energy-saving working equipment of a single-bucket excavator on a rotary column comprises a top utility tractor, a rotary column, including a base and a head, a boom, a handle, a bucket, main hydraulic cylinders of a boom. The boom is hingedly connected to a head of a rotary column, and the main hydraulic cylinders of the boom are hingedly connected to the base of the rotary column and the boom. A balancing pneumatic hydraulic cylinder is connected to the base of the rotary column and the boom, and a piston cavity of the balancing pneumatic hydraulic cylinder is connected to a gas balloon charged with pressure of more than 10 MPa. At the same time the gas balloon volume makes more than five working volumes of the balancing pneumatic hydraulic cylinder, a hinged joint of which is arranged on the base of the rotary column with displacement relative to the boom hinged joint on the rotary column head, with the possibility to ensure compact arrangement at the upper and lower positions of the working equipment.

EFFECT: increased effectiveness and efficiency factor, improved design of the working equipment.

1 dwg

FIELD: construction.

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FIELD: machine building.

SUBSTANCE: device comprises boom, bucket, hydraulic cylinders of boom, balancing pneumatic hydraulic cylinder, gas balloon, hydraulic pump, main and additional hydraulic distributors of boom control. Piston cavities of boom hydraulic cylinders are arranged with the possibility of connection to hydraulic pump via main hydraulic distributor or additional hydraulic distributor of differential type, providing for the possibility to connect simultaneously piston and stem cavities of boom hydraulic cylinders to hydraulic pump. At the same time piston cavity of balance pneumatic hydraulic cylinder is connected to gas balloon charged to pressure of more than 10 MPa, and ratio of squares of piston diametre and boom hydraulic cylinders stem is within the range of .

EFFECT: energy efficiency, increased capacity, higher efficiency factor of working equipment.

1 cl, 3 dwg

Working machine // 2403348

FIELD: transport.

SUBSTANCE: working machine designed for at least two functions including attachment displacement and (or) steering. The machine includes at least two hydraulic circuits, one hydraulic circuit for each of mentioned functions. Each hydraulic circuit includes at least one hydraulic pump to control operation of corresponding attachment or steering functions; separate first electric machine with possibility to transfer driving force and connected with each of mentioned hydraulic pumps for separate power supply to the pump and power takeoff form the pump; transmission for working machine displacement by means of driving wheels. The transmission includes at least one second electric machine mechanically connected with the mentioned first electric machines to exchange power between hydraulic circuits and transmission.

EFFECT: lower fuel consumption and higher efficiency.

22 cl, 9 dwg

FIELD: machine building.

SUBSTANCE: facility consists of compressor, oil-moisture separator and receiver pneumatically and successively interconnected. An output of the receiver is coupled to inputs of adsorbers with evenly distributed heaters; while outputs of adsorbers are pneumatically connected to a consumer. Also a compressor is equipped with a suction filter containing a case with a conic bottom and an orifice in its lower part, a connecting pipe of purified air outlet, a condensate extractor positioned in the bottom orifice, a reflecting partition, and a connecting pipe of purified air inlet. The case of the filter is made in form of a two-layer jacket with an air cavity connected to adsorbers and the connecting pipe of outlet of heated generated air to atmosphere by means of the connecting pipe of inlet of heating generated air via a pipeline and a control valve. Notably, curvilinear grooves with a dovetail shape are made on internal surface of the connecting pipe of inlet of purified air; the connecting pipe of purified air inlet is made in form of a convergent nozzle. A circular groove connected with a device for impurities extraction is made at the inlet orifice of the connecting pipe for purified air inlet. The circular groove is coupled with curvilinear grooves and is equipped with a mesh.

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3 dwg

FIELD: construction.

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EFFECT: invention provides for displacement of excavator under severe road conditions at the second gear, and also expanded functionality.

3 dwg

FIELD: construction.

SUBSTANCE: invention refers to the field of machine building, namely to hydraulically driven crawler shovels. Hydraulic drive of crawler shovel comprises power pumps, control pump, distributor, hydraulic motors of stroke, power hydraulic lines, hydraulic lines of servocontrol with control units, hydraulic cylinders of caterpillar belt tension. Besides between each hydraulic cylinder of caterpillar belts tension and according power hydraulic lines of stroke, there is an additional circuit included, made of two drain check valves, discharge check valve, safety valve and hydraulic lines of servocontrol, at the same time piston cavity of hydraulic cylinder of tension of caterpillar belts is connected to discharge cavity of safety valve and through discharge check valve with discharge hydraulic line of servocontrol, and stem cavity - to drain cavity of safety valve and through drain check valves with power hydraulic lines of stroke.

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1 dwg

FIELD: mining.

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EFFECT: invention increases rigidity and reliability of support structures of mining machine actuator, improves durability of machine as a whole.

1 cl, 1 dwg

FIELD: construction industry.

SUBSTANCE: group of inventions refers to mining engineering and construction industry, namely to construction machine, particularly for vibration generation. Construction machine includes transfer mechanism, at least one hydraulic drive and hydraulic system for providing hydraulic drive with hydraulic medium. At that, at least one lubrication hydraulic line by means of which hydraulic medium can be supplied to transfer mechanism as lubrication means is branched off hydraulic system. At that, in lubrication hydraulic line there provided is dosing device by means of which supply of lubrication means can be changed depending on operating mode of transfer mechanism.

EFFECT: improving operating reliability of machine.

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FIELD: construction.

SUBSTANCE: group of inventions pertain to construction, namely, to hydraulic hammers hung on to construction excavators. Method of protection of the excavator from the influence of hydraulic hammer blowing mass of the hammer pin over the wedge of the hydraulic hammer according to which oscillation damping of the working equipment from the mass action of the hammer pin during its idle run is performed through main hydraulic cylinders of lead control. Oscillation damping of the working equipment is performed both through the main hydraulic cylinder and through a balancing pneumatic - hydraulic cylinder. Whereat balancing pneumatic - hydraulic cylinder is made with constant gas pressure characteristic, and head ends of main hydraulic cylinders of lead control are connected with hydropneumatic accumulator with variable characteristic of gas pressure in its air bladder.

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2 cl, 5 dwg

FIELD: earth-moving facilities; hydraulic drives of scraper working members.

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4 dwg

FIELD: handling machinery, particularly soil-shifting, mining, agricultural and loading cyclic machines.

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3 cl, 4 dwg

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2 dwg

FIELD: mechanical engineering, particularly hydraulic systems for mobile machines.

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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.

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4 dwg

FIELD: mining industry, mechanical engineering, possible use in system for controlling caterpillar drive of mining machine.

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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.

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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

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