CN104234115A - Pressure storage type efficient and energy-saving excavator - Google Patents
Pressure storage type efficient and energy-saving excavator Download PDFInfo
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- CN104234115A CN104234115A CN201310231865.4A CN201310231865A CN104234115A CN 104234115 A CN104234115 A CN 104234115A CN 201310231865 A CN201310231865 A CN 201310231865A CN 104234115 A CN104234115 A CN 104234115A
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Abstract
The invention relates to an energy-saving excavator, and belongs to the field of engineering machinery. The excavator comprises an engine and a hydraulic pump. A hydraulic pressure storage device is arranged in the excavator. The engine drives the hydraulic pump to store hydraulic pressure to the hydraulic pressure storage device through a pipeline. The hydraulic pressure storage device drives a hydraulic execution element through a pipeline. The energy-saving excavator is simple in structure, the elements can be easily obtained, the energy-saving excavator can be conveniently applied to engineering machines such as excavators, oil consumption can be remarkably lowered, engineering cost can be remarkably reduced, and the energy-saving excavator is an environment-friendly engineering machine.
Description
Technical field
The present invention relates to a kind of excavator, particularly the energy-conservation excavator of one, belongs to engineering machinery field.
Background technology
Excavator is one of large-scale engineering machinery of generally applying of engineering field, its working environment adaptability is good, operating efficiency is high, current excavator generally adopts hydraulic type, hydraulic crawler excavator is primarily of motor, hydraulic system, equipment, the part such as running gear and electrical control composition, hydraulic system is by hydraulic pump, control valve, hydraulic cylinder, hydraulic motor, pipeline, the compositions such as fuel tank, equipment is the device directly completing mining task, it is by swing arm, dipper, scraper bowl etc. three part is hinged to be formed, swing arm rises and falls, the flexible rotation with scraper bowl of dipper all uses reciprocating double-action hydraulic cylinder to control, the power of hydraulic pressure be adopt Hydraulic Power Transmission System by hydraulic pump by the power transmission of motor to hydraulic motor, the executive components such as hydraulic cylinder, push the work forward device action, thus complete various operation, in this working method, hydraulic power provides the driving hydraulic pump works needing engine continuous, the power output of motor needs constantly to change according to the demand of equipment at work, power output is unstable, engine speed can not be stabilized near most fuel-economizing value preferably, such as when the larger hydraulic pressure of needs, motor needs to export larger power, energy consumption can significantly rise, when engine idle, still require the expenditure of energy, due to the excavator engineering machinery that inherently oil consumption is very large, adopt the excavator under this mode of operation more can strengthen the oil consumption of excavator, be unfavorable for the reduction of the energy-conservation and engineering cost of excavator.
Summary of the invention
The present invention is for providing a kind of elastic energy storing style energy-efficient excavator.
The energy-efficient excavator of a kind of elastic energy storing style provided by the present invention, comprise motor and hydraulic pump, described excavator is provided with hydraulic accumulator, Engine driven Hydraulic Pump is stored up to hydraulic accumulator by hydraulic pressure of pipe line, hydraulic accumulator drives hydraulic actuator by pipeline, described hydraulic accumulator arranges at least two, described hydraulic actuator comprises hydraulic cylinder and hydraulic motor, pressure sensor is provided with in described hydraulic accumulator, pressure signal is sent to controller by pressure sensor, connecting line is provided with between described hydraulic accumulator, pipeline is provided with valve.
The energy-efficient excavator of a kind of elastic energy storing style provided by the present invention, motor driven oil pump is adopted to be stored in hydraulic accumulator by oil pressure, use engine operation curve that can be optimum when storing up pressure, storage is made to press the course of work to complete under motor and oil pump are engaged in the pattern of most fuel-economizing, this process engine operation is stable, not only be conducive to fuel-economizing, the workload of motor and related system can also be optimized, the life-span of prolonged mechanical, reduce the expense of plant maintenance aspect, the force value of rational setting accumulator, storage more can be made to press through journey and to fall low energy consumption, Hydraulic Elements work is driven by accumulator, after arranging various control valve and pressure monitoring adjusting device, course of work pressure durations is stablized, the accumulator of more than two is set, can when an accumulator insufficient pressure, continued to perform driving task by another accumulator, two accumulators can one carry out storage by motor driven oil pump and press, one drives hydraulic actuator to carry out excacation, after storage pressure completes, can directly kill engine, idling mode need not be taked, further reduction engine consumption, structure of the present invention is simple, element is easy to get, can be applied in the engineering machinery such as excavator easily, oil consumption and engineering cost can be reduced significantly, it is a kind of eco-friendly engineering machinery.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention.
Detailed description of the invention
In order to explain enforcement of the present invention more fully, provide embodiment of the present invention.These embodiments are only the elaborations to this device, do not limit the scope of the invention.
As shown in Figure 1, the energy-efficient excavator of a kind of elastic energy storing style, comprise motor 1 and hydraulic pump 2, described excavator is provided with hydraulic accumulator, motor 1 drives hydraulic pump 2 by hydraulic pressure of pipe line storage to hydraulic accumulator, hydraulic accumulator drives hydraulic actuator by pipeline, described hydraulic accumulator arranges at least two, described hydraulic actuator comprises hydraulic cylinder and hydraulic motor, 3 are depicted as a hydraulic cylinder, pressure sensor is provided with in described hydraulic accumulator, pressure signal is sent to controller by pressure sensor, connecting line is provided with between described hydraulic accumulator, pipeline is provided with valve, in accompanying drawing 1, accumulator is provided with two, be respectively accumulator a4-1, accumulator b4-2, pressure sensor is equipped with in two accumulators, oil pump, accumulator, fuel tank, be connected with valve by oil circuit between the hydraulic components such as executive component, valve can be automatic valve, the logical relation of opening and closing can be set between each valve, by controller centralized Control, controller can be arranged separately, also corresponding functional module operate as controllers function can be increased in current vehicle computer, pipeline and the valve of UNICOM is provided with between two accumulators.When the present invention works, first by transmission system drives oil pump 2, hydraulic pressure is stored to two hydraulic accumulators by motor 1, storage presses through journey and motor and oil pump can be adopted to be engaged in stabilized (steady-state) speed near best effort value, namely the pattern storage pressure of most fuel-economizing is adopted, storage pressure process energy conservation can be ensured, when two hydraulic accumulator pressure reservoir are to setting value, motor can cut out, when hydraulic actuator needs work, controller controls the valve opened between hydraulic accumulator and hydraulic actuator and provides the work of pressure-driven hydraulic pressure executive component, under a hydraulic accumulator pressure reaches setting value in limited time, controller controls to switch to another hydraulic accumulator, simultaneously can according to actual conditions ato unit by the hydraulic accumulator pressurising of oil pump to insufficient pressure, reasonably arranging engine start opportunity can successively to two hydraulic accumulator pressurising, reduce the number of starts of motor, motor can not adopt idling work pattern in the present invention.Hydraulic accumulator in the present invention, also known as hydraulic energy storage device, accumulator, can adopt mechanical type, vapour-pressure type, does not limit to and the form shown in Fig. 1.The energy-efficient excavator of a kind of elastic energy storing style provided by the present invention, motor driven oil pump is adopted to be stored in hydraulic accumulator by oil pressure, the working curve that use motor that can be optimum when storing up pressure and oil pump coordinate, storage is made to press the course of work to complete under the pattern of the most fuel-economizing of motor, this process engine operation is stable, not only be conducive to fuel-economizing, the workload of motor and related system can also be optimized, the life-span of prolonged mechanical, reduce the expense of plant maintenance aspect, the force value of rational setting accumulator, storage more can be made to press through journey and to fall low energy consumption, Hydraulic Elements work is driven by accumulator, after arranging control valve and pressure monitoring adjusting device, course of work pressure durations is stablized, the accumulator of more than two is set, can when an accumulator insufficient pressure, continued to perform driving task by another accumulator, two accumulators can one have motor driven oil pump to carry out storage pressure, one drives hydraulic actuator to carry out excacation, after storage pressure completes, can directly kill engine, idling mode need not be taked, further reduction engine consumption, structure of the present invention is simple, element is easily made, can be applied in the engineering machinery such as excavator easily, although energy storage and efficient problem in discharging, but due to very large even equipment of large-scale engineering machinery formula energy consumption such as excavators, its jiggly operation has more increased the weight of the consumption of energy consumption, also oil consumption and engineering cost can be reduced significantly after the efficiency of energy storage and release is considered, it is a kind of eco-friendly engineering machinery.
After detailed description embodiments of the present invention, the personage being familiar with this technology can be well understood to, do not departing under above-mentioned claim and spirit and can carry out various change and amendment, all above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all belong to the scope of technical solution of the present invention, and the present invention is not also limited to the embodiment of example in manual.
Claims (5)
1. the energy-efficient excavator of elastic energy storing style, comprise motor and hydraulic pump, it is characterized in that: described excavator is provided with hydraulic accumulator, hydraulic pressure is stored up to hydraulic accumulator by pipeline by Engine driven Hydraulic Pump, and hydraulic accumulator drives hydraulic actuator by pipeline.
2. the energy-efficient excavator of elastic energy storing style according to claim 1, is characterized in that: described hydraulic accumulator arranges at least two.
3. the energy-efficient excavator of elastic energy storing style according to claim 1, is characterized in that: described hydraulic actuator comprises hydraulic cylinder and hydraulic motor.
4. the energy-efficient excavator of elastic energy storing style according to claim 1, is characterized in that: be provided with pressure sensor in described hydraulic accumulator, pressure signal is sent to controller by pressure sensor.
5. the energy-efficient excavator of elastic energy storing style according to claim 2, is characterized in that: be provided with connecting line between described hydraulic accumulator, pipeline is provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310231865.4A CN104234115A (en) | 2013-06-13 | 2013-06-13 | Pressure storage type efficient and energy-saving excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310231865.4A CN104234115A (en) | 2013-06-13 | 2013-06-13 | Pressure storage type efficient and energy-saving excavator |
Publications (1)
| Publication Number | Publication Date |
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| CN104234115A true CN104234115A (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201310231865.4A Pending CN104234115A (en) | 2013-06-13 | 2013-06-13 | Pressure storage type efficient and energy-saving excavator |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778020A (en) * | 1986-06-11 | 1988-10-18 | MAN Nutzfahreuge GmbH | Utility vehicle designed for frequent starting and stopping |
| JPH09177138A (en) * | 1995-12-27 | 1997-07-08 | Hitachi Constr Mach Co Ltd | Hydraulic circuit of hydraulic shovel |
| US20050138924A1 (en) * | 1999-08-31 | 2005-06-30 | Teijin Seiki Co., Ltd. | Hydraulic drive apparatus |
| CN101861437A (en) * | 2007-08-23 | 2010-10-13 | 利勃海尔-法国股份有限公司 | Hydraulic drive, particularly of a digger, particularly for a rotation system |
| CN102300754A (en) * | 2008-12-09 | 2011-12-28 | 伊凡克发展有限公司 | Braking energy recovery system for a vehicle and vehicle equipped with same |
| CN102704524A (en) * | 2012-04-19 | 2012-10-03 | 华南理工大学 | Rotary energy saving system of hydraulic excavator |
| CN102985704A (en) * | 2010-06-30 | 2013-03-20 | 沃尔沃建造设备有限公司 | Control device for a hydraulic pump of construction machinery |
-
2013
- 2013-06-13 CN CN201310231865.4A patent/CN104234115A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4778020A (en) * | 1986-06-11 | 1988-10-18 | MAN Nutzfahreuge GmbH | Utility vehicle designed for frequent starting and stopping |
| JPH09177138A (en) * | 1995-12-27 | 1997-07-08 | Hitachi Constr Mach Co Ltd | Hydraulic circuit of hydraulic shovel |
| US20050138924A1 (en) * | 1999-08-31 | 2005-06-30 | Teijin Seiki Co., Ltd. | Hydraulic drive apparatus |
| CN101861437A (en) * | 2007-08-23 | 2010-10-13 | 利勃海尔-法国股份有限公司 | Hydraulic drive, particularly of a digger, particularly for a rotation system |
| CN102300754A (en) * | 2008-12-09 | 2011-12-28 | 伊凡克发展有限公司 | Braking energy recovery system for a vehicle and vehicle equipped with same |
| CN102985704A (en) * | 2010-06-30 | 2013-03-20 | 沃尔沃建造设备有限公司 | Control device for a hydraulic pump of construction machinery |
| CN102704524A (en) * | 2012-04-19 | 2012-10-03 | 华南理工大学 | Rotary energy saving system of hydraulic excavator |
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Application publication date: 20141224 |
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| WD01 | Invention patent application deemed withdrawn after publication |