CN201125402Y - Automatic control operation mode loading apparatus - Google Patents

Automatic control operation mode loading apparatus Download PDF

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Publication number
CN201125402Y
CN201125402Y CNU2007200998723U CN200720099872U CN201125402Y CN 201125402 Y CN201125402 Y CN 201125402Y CN U2007200998723 U CNU2007200998723 U CN U2007200998723U CN 200720099872 U CN200720099872 U CN 200720099872U CN 201125402 Y CN201125402 Y CN 201125402Y
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CN
China
Prior art keywords
controlling organization
control
loader
transmission
mode
Prior art date
Application number
CNU2007200998723U
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Chinese (zh)
Inventor
郑尚龙
孟广良
李学忠
吴国祥
李莺莺
王亮
杨国明
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天津工程机械研究院
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Priority to CNU2007200998723U priority Critical patent/CN201125402Y/en
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Publication of CN201125402Y publication Critical patent/CN201125402Y/en

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Abstract

The utility model relates to an automatic control work mode loader, which belongs to field of loading engineering mechanical technology. The automatic control work mode loader comprises a frame, a turning mechanism, a control mechanism, a engine and a transmission mechanism, the turning mechanism, the control mechanism, the engine and the transmission mechanism are arranged on the frame, the control mechanism connects and controls the transmission mechanism which connects a spading mechanism, wherein, the control mechanism is connected with an automatic shift control mechanism, a hydraulic sensor is connected on the spading mechanism, the control mechanism is connected with the automatic shift control mechanism which controls electro hydraulic automatic shift gear, the control mechanism connects and controls the electromagnetic valve to adjust the discharge capacity of the variable pump. The utility model has merits of reasonable distribution of power of the whole machine, large spading traction, rapid operation speed of the loading boom and the bucket, energy saving and high work efficiency.

Description

A kind of automatic control mode of operation loader

Technical field

The utility model belongs to the loading technical field of engineering machinery, particularly relates to a kind of automatic control mode of operation loader.

Background technology

At present, the power of existing loader motor, a part drives traveling mechanism (power transmission shaft, vehicle bridge, wheel) by fluid torque-converter and gearbox, realizes that loader travels, and another part drives hydraulic jack by hydraulic oil pump, realizes turning to and loading work.

When loader was worked, one side was advanced, and scraper bowl shovels the dress material simultaneously, its spading mechanism oil pump just often and torque-converters work together, and the power that spading mechanism oil pump is consumed accounts for the 40-60% of engine power, so torque-converters and motor adopt the part power match.When loader in transportation during operating mode, the operating point is on the governor control characteristics of the motor of being everlasting, engine power performance and economy reduce.

The transmission efficiency of hydraulic power is lower in addition, and when especially running into heavy duty, the transmission efficiency of fluid torque-converter declines to a great extent on the contrary, and operating efficiency is reduced, and has caused the waste of the energy.At this situation, generally all wait and improve torque-converters efficient and efficiently distinguish scope by design double pump wheel, two guide wheel, two turbine, improve transmission efficiency.The advantage of this method is that simple to operate, transmission efficiency improves, but not from the inefficient problem of the heavily loaded underdrive of basic solution, and the fault rate height.The gear number that passing through of also having increases power-shift transmission solves, but has increased after the gear number, constantly handles shift handle scatter operation person's notice because of needs, influence operating efficiency, and the transmission efficiency raising is limited.

The traditional hydraulic system of loader adopts Constant Pump System.Steering and spading mechanism mainly adopt two to overlap independently hydraulic system (also have the part system to adopt the interflow form, promptly steering and work system are collaborated by pressure-gradient control valve), and system all adopts the gear pump fuel feeding, belongs to valve control quantitative system.System architecture is simple, price is lower, reliability is high, but the inefficiency of system, the oil temperature is higher, operability is relatively poor.Because two constant displacement pumps are by the gearbox power taking, as long as engine speed is certain, two pumps all provide constant flow.When the fuel supply flow rate of pump takes more than turning to work system, remainder has only by overflow valve and flows back to fuel tank, causes bigger energy loss, and makes the oily temperature rise of system.When loader does not turn to or during not operation, the fluid of two systems carries out the low pressure and mass flow off-load by steering gear and banked direction control valves meta respectively.Although the pressure unloading of pump is the flow losses of pipeline and valve, it is much smaller to compare operating pressure, because two pumps are still the delivery fuel feeding, so the off-load of system loss is still very important.

Summary of the invention

The technical problem of the utility model for existing in the solution known technology, and a kind of automatic control mode of operation loader is provided.

The purpose of this utility model provides a kind of loader based on Based Intelligent Control, this loader dynamic property and good economy performance, and efficient energy-saving, simple to operate laborsaving, the general technical level of raising loader.

The utility model is taked following technical scheme:

Automatically control the mode of operation loader, comprise frame, steering mechanism, controlling organization, motor and transmission mechanism thereof, frame is equipped with steering mechanism, controlling organization, motor and transmission mechanism thereof, controlling organization connects the control transmission mechanism, transmission mechanism connects spading mechanism, be characterized in: controlling organization connected load hydrostatic sensor, hydrostatic sensor is mounted in the spading mechanism, controlling organization connects the self shifter controlling organization, the self shifter controlling organization is controlled electric liquid automatic shifting transmission gear box, and controlling organization connects the electromagnetic valve of control and regulation variable pump discharge capacity.

The utility model can also adopt following technical measures:

Described automatic control mode of operation loader is characterized in: controlling organization connects motor underloading, heavily loaded mode of operation selector, and the controlling organization panel is provided with underloading, heavily loaded mode of operation selector switch.

Described automatic control mode of operation loader, be characterized in: the boom cylinder of spading mechanism is equipped with pressure sensor, and controlling organization connects pressure sensor, judges loader active section of living in by measuring oil cylinder working-pressure.

Described automatic control mode of operation loader, be characterized in: transmission mechanism is selected three element torque-converters and preceding four backs three electric liquid automatic shifting transmission gear boxs for use, with secondary speed, engine speed is controlling parameter, by controlling organization electric liquid automatic shifting transmission gear box is carried out self shifter control, make torque-converters in efficient state work.

Described automatic control mode of operation loader, be characterized in: the controlling organization panel is provided with the gearshift mode selection switch, the manual shift pattern is by the gearshift driving lever control that is positioned at steering wheel lower-left side, and self-shifting direction switch and mandatory down one retaining button DSS are integrated on the combination stalk.

Advantage that the utlity model has and good effect:

Automatically control mode of operation loader adopts BBG and controlled variable pump, manually select motor light by the mode of operation selector switch that is installed on the control panel, the heavy duty mode of operation, the power output of control motor, by the load-sensitive hydraulic mechanism according to magnitude of load automatic regulated variable pump delivery under maximum pump discharge, reach complete machine power stream is carried out reasonable distribution, and make loader have bigger tractive force when the spading by distribution to power stream, swing arm and scraper bowl have service speed faster when loading, both save the energy, improved operating efficiency again.Simultaneously, control the self shifter of electric liquid manual transmission by controller, the assurance torque-converters in efficient district's work, had both been simplified operation as far as possible, had improved the operating efficiency and the service behaviour of complete machine again.Superiority of the present utility model and technique effect:

1, the control motor always works near the rated power point, and motor 8 has higher economical efficiency and dynamic property.

2, variable pump is regulated discharge capacity automatically according to load condition, and how many hydraulic systems needs what are supplied with, and avoided high pressurized overflow.

3, automatic gear shifting system has not only improved drive line efficiency but also simplified operation, has improved the loader operating efficiency.

4, carry out the power flow distribution by regulating motor and variable pump, the driving force when both having improved spading has improved the rapidity of the work of loading again, complete machine good economy performance, high efficiency.

Description of drawings

Fig. 1 is that the utility model is controlled mode of operation loader structural representation automatically;

Fig. 2 the utility model Based Intelligent Control functional-block diagram.

Among the figure, 1-spading mechanism, 2-load sensing hydraulic mechanism, the 3-driving lever of shifting gears, 4-steering wheel, the 5-driver's cabin, 6-combination stalk, 7-torque-converters, 8-motor, 9-frame, the 10-wheel, 11-variable pump, 12-electricity liquid manual transmission, 13-transmission mechanism, 14-boom cylinder.

The specific embodiment

For further understanding content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

Consult accompanying drawing 1 and Fig. 2.

Embodiment 1

Automatically control the mode of operation loader, comprise frame 9, steering mechanism, controlling organization, motor and transmission mechanism 13 thereof, frame 9 is equipped with steering mechanism, controlling organization, motor and transmission mechanism 13 thereof, and controlling organization connects the control transmission mechanism, and transmission mechanism connects spading mechanism 1.There is driver's cabin 5 middle part of frame 9, side at driver's cabin 5 has spading mechanism 1, opposite side is equipped with actuating unit, electric liquid manual transmission 12, transmission mechanism 13 and steering hydraulic mechanism are arranged at the bottom of frame 9, frame 9 is equipped with wheel 10, its controlling organization connected load hydrostatic sensor, hydrostatic sensor is mounted in the spading mechanism 1.Spading mechanism 1 connects is equipped with load sensing hydraulic mechanism 2, frame 9 is equipped with BBG 8 and controlling organization thereof, controlling organization connected load sensing hydraulic mechanism 2, self shifter controlling organization, the self shifter controlling organization is controlled electric liquid automatic shifting transmission gear box 12, and controlling organization connects the discharge capacity of control variables pump electromagnetic valve regulated variable pump 11.

Controlling organization connects BBG 8 underloadings, heavily loaded mode of operation selector, and the controlling organization panel is provided with underloading, heavily loaded mode of operation selector switch.The controlling organization panel is provided with the gearshift mode selection switch, and the manual shift pattern is by gearshift driving lever 3 controls that are positioned at steering wheel 4 lower-left sides, and self-shifting direction switch and mandatory down one retaining button DSS are integrated on the combination stalk 6.The boom cylinder 14 of spading mechanism is equipped with pressure sensor, and controlling organization connects pressure sensor, judges loader active section of living in by measuring oil cylinder 14 pressure.Transmission mechanism is selected three element torque-converters 7 and preceding four backs three electric liquid automatic shifting transmission gear boxs 12 for use, with secondary speed, engine speed is controlling parameter, by controlling organization electric liquid automatic shifting transmission gear box 12 is carried out self shifter control, make torque-converters 7 in efficient state work.

The utility model purpose is achieved in that

At first, analyze the loader secret service and make characteristic with reference to loader service load spectral line.Operating characteristic binding engine characteristic curve during according to loader difference operating mode is determined motor 8 basic, normal, high three working curves, the corresponding a kind of loader operating mode of each working curve.Loader work be divided into gently, two kinds of mode of operations of heavy duty, the working range that the corresponding motor of every kind of pattern 8 is different is manually selected light, heavily loaded mode of operation according to operating mode by the mode of operation selector switch that is installed on the control panel by the driver.According to the discharge capacity of the automatic regulated variable pump 11 of the different control programs of loader active section of living in, to control its absorbed power.The different operating section is set variable pump 11 different maximum pump discharges, and maximum pump discharge setting numerical value is determined by loader walking, underloading spading, three kinds of exemplary operation of heavily loaded spading, is divided into large, medium and small three retainings.After maximum pump discharge was set, load sensing hydraulic mechanism 2 was regulated pump delivery automatically according to magnitude of load under maximum pump discharge.Pressure sensor is equipped with in boom cylinder 14 bottoms, judges loader active section of living in by measuring the oil cylinder base pressure.Transmission system is selected three element torque-converters 7 for use, with preceding four backs three electric liquid automatic shifting transmission gear boxs 12, with secondary speed, engine speed is controlling parameter, according to the gearshift strategy of setting electric liquid automatic shifting transmission gear box 12 is carried out self shifter control by controller, guarantee that torque-converters 7 is operated in the efficient district of regulation as far as possible.Adopt three kinds of gearshift patterns, manual mode (M), automatic 1 pattern (L) and automatic 2 patterns (H).The L pattern according to the operating mode self shifter, is mainly used in the excavation and the loading operation of loader between lower-speed state 1-2 retaining; The self shifter between fast state 1-4 retaining of H pattern is mainly used in the long-range walking of loader and the loading operation of long distance.The manual shift pattern is by gearshift driving lever 3 controls that are positioned at steering wheel lower-left side; Self-shifting direction switch and mandatory down one retaining button DSS are integrated on the combination stalk 6; The gearshift mode selection switch is positioned on the instrument desk.

Concrete work is finished like this:

As shown in Figure 2: before the loader work by the driver according to operating mode, manually select light, heavily loaded mode of operation by the mode of operation selector switch that is installed on the control panel.Underloading mode engine 8 low, in work on two characteristic curves, heavily loaded mode engine is worked on low, high two characteristic curves.(another pattern also can be set be used for special operation condition, big or the gradient is arranged such as road traveling condition poor----running resistance, this moment, engine operation was on middle and high two characteristic curves).When shovel dress material process and climbing are travelled, adopt more high-power curve, when deadhead operation, adopt the smaller power curve, avoid motor 8 to be operated on the speed governing curve regularly.The oil cylinder base pressure that pressure sensor detected adorned according to boom cylinder 14 bottoms of master controller is judged loader active section of living in and load condition in the course of the work, discharge capacity in the middle of using during the underloading spading, use little discharge capacity during the heavy duty spading, guarantee that loader has bigger driving force; When moved arm lifting and scraper bowl upset, use big discharge capacity, guarantee operating rate faster.After maximum pump discharge was set, load sensing hydraulic mechanism 2 was regulated pump delivery automatically according to magnitude of load under maximum pump discharge.

The gearshift work of this loader is finished like this: the driver selectes the gearshift pattern according to operating habit and operating mode etc. by the gearshift mode selection switch: manual mode (M), automatic 1 pattern (L) and automatic 2 patterns (H).The driver is positioned at gearshift driving lever 3 manual shifts of steering wheel 4 downsides by manipulation during manual mode, and during automatic mode, the gearshift control program guarantees that torque-converters 7 is operated in the efficient district of regulation as far as possible, to reach purpose of energy saving according to current operating mode self shifter.

Claims (5)

1. control the mode of operation loader automatically for one kind, comprise frame (9), steering mechanism, controlling organization, motor and transmission mechanism thereof, frame (9) is equipped with steering mechanism, controlling organization, motor and transmission mechanism thereof, controlling organization connects the control transmission mechanism, transmission mechanism connects spading mechanism (1), it is characterized in that: controlling organization connected load hydrostatic sensor, hydrostatic sensor is mounted in the spading mechanism (1), controlling organization connects the self shifter controlling organization, the self shifter controlling organization is controlled electric liquid automatic shifting transmission gear box (12), and controlling organization connects the electromagnetic valve of control and regulation variable pump (11) discharge capacity.
2. automatic control mode of operation loader according to claim 1 is characterized in that: controlling organization connects motor underloading, heavily loaded mode of operation selector, and the controlling organization panel is provided with underloading, heavily loaded mode of operation selector switch.
3. automatic control mode of operation loader according to claim 1, it is characterized in that: the boom cylinder of spading mechanism (14) is equipped with pressure sensor, controlling organization connects pressure sensor, judges loader active section of living in by measuring oil cylinder (14) pressure.
4. automatic control mode of operation loader according to claim 1, it is characterized in that: transmission mechanism is selected three element torque-converters (7) and preceding four backs three electric liquid automatic shifting transmission gear boxs (12) for use, with secondary speed, engine speed is controlling parameter, by controlling organization electric liquid automatic shifting transmission gear box (12) is carried out self shifter control, make torque-converters (7) in efficient state work.
5. automatic control mode of operation loader according to claim 1, it is characterized in that: the controlling organization panel is provided with the gearshift mode selection switch, the manual shift pattern is by gearshift driving lever (3) control that is positioned at steering wheel (5) lower-left side, and self-shifting direction switch and mandatory down one retaining button DSS are integrated on the combination stalk (6).
CNU2007200998723U 2007-10-11 2007-10-11 Automatic control operation mode loading apparatus CN201125402Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101818508A (en) * 2010-04-19 2010-09-01 三一重机有限公司 Power control system and method of excavator
CN102071715A (en) * 2010-12-30 2011-05-25 三一重工股份有限公司 Intelligent lifting method and device for scraper knife in engineering machine
CN102304933A (en) * 2011-03-16 2012-01-04 陈海波 Loader movable arm pilot pressure control system
CN102330442A (en) * 2011-06-22 2012-01-25 山推工程机械股份有限公司 Automatic control system and automatic control method for scraper knife of hydraulic bulldozer
CN102330447A (en) * 2011-03-17 2012-01-25 陈海波 Special heavy-load loading power distribution control system for loading machine
CN101625543B (en) * 2009-08-07 2012-05-02 三一重工股份有限公司 Construction machinery, control system and control method thereof
CN102733441A (en) * 2012-06-15 2012-10-17 三一重机有限公司 Raising speed control energy saving system and method for excavator
CN103210152A (en) * 2010-09-14 2013-07-17 卡特彼勒环球矿业有限责任公司 Control systems and methods for heavy equipment
CN103422527A (en) * 2013-07-24 2013-12-04 三一重机有限公司 Self-adaptive control method and device
CN104234116A (en) * 2013-06-18 2014-12-24 卡特彼勒公司 System and method for dig detection
WO2018085974A1 (en) * 2016-11-08 2018-05-17 Guangxi Liugong Machinery Co., Ltd. Multiple level work hydraulics anti-stall
CN110462140A (en) * 2017-10-12 2019-11-15 株式会社小松制作所 The control method of working truck and working truck

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101625543B (en) * 2009-08-07 2012-05-02 三一重工股份有限公司 Construction machinery, control system and control method thereof
CN101818508A (en) * 2010-04-19 2010-09-01 三一重机有限公司 Power control system and method of excavator
CN103210152A (en) * 2010-09-14 2013-07-17 卡特彼勒环球矿业有限责任公司 Control systems and methods for heavy equipment
CN103210152B (en) * 2010-09-14 2015-08-19 卡特彼勒环球矿业有限责任公司 For control system and the method for jumbo
CN102071715B (en) * 2010-12-30 2012-09-05 三一重工股份有限公司 Intelligent lifting method and device for scraper knife in engineering machine
CN102071715A (en) * 2010-12-30 2011-05-25 三一重工股份有限公司 Intelligent lifting method and device for scraper knife in engineering machine
CN102304933A (en) * 2011-03-16 2012-01-04 陈海波 Loader movable arm pilot pressure control system
CN102304933B (en) * 2011-03-16 2013-06-05 昆山航天智能技术有限公司 Loader movable arm pilot pressure control system
CN102330447A (en) * 2011-03-17 2012-01-25 陈海波 Special heavy-load loading power distribution control system for loading machine
CN102330442A (en) * 2011-06-22 2012-01-25 山推工程机械股份有限公司 Automatic control system and automatic control method for scraper knife of hydraulic bulldozer
CN102330442B (en) * 2011-06-22 2013-06-12 山推工程机械股份有限公司 Automatic control system and automatic control method for scraper knife of hydraulic bulldozer
CN102733441A (en) * 2012-06-15 2012-10-17 三一重机有限公司 Raising speed control energy saving system and method for excavator
CN104234116A (en) * 2013-06-18 2014-12-24 卡特彼勒公司 System and method for dig detection
CN104234116B (en) * 2013-06-18 2018-05-29 卡特彼勒公司 For excavating the system and method for detection
CN103422527A (en) * 2013-07-24 2013-12-04 三一重机有限公司 Self-adaptive control method and device
CN103422527B (en) * 2013-07-24 2015-06-10 三一重机有限公司 Self-adaptive control method and device
WO2018085974A1 (en) * 2016-11-08 2018-05-17 Guangxi Liugong Machinery Co., Ltd. Multiple level work hydraulics anti-stall
US10619330B2 (en) 2016-11-08 2020-04-14 Guangxi Liugong Machinery Co., Ltd. Multiple level work hydraulics anti-stall
CN110462140A (en) * 2017-10-12 2019-11-15 株式会社小松制作所 The control method of working truck and working truck

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