CN103452150A - Hybrid power hydraulic excavator system adopting movable arm closed control - Google Patents
Hybrid power hydraulic excavator system adopting movable arm closed control Download PDFInfo
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- CN103452150A CN103452150A CN 201310405323 CN201310405323A CN103452150A CN 103452150 A CN103452150 A CN 103452150A CN 201310405323 CN201310405323 CN 201310405323 CN 201310405323 A CN201310405323 A CN 201310405323A CN 103452150 A CN103452150 A CN 103452150A
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Abstract
The invention discloses a hybrid power hydraulic excavator system adopting movable arm closed control, comprising an internal combustion engine, a multitandem valve bank, a variable displacement hydraulic pump, a generator, an electric energy storage unit, a movable arm control system, a rotation control system, a bucket hydraulic cylinder and a bucket rod hydraulic cylinder, wherein a motor with variable rotation speed is used for driving the hydraulic pump with three oil ports to directly control a movable arm hydraulic cylinder, so that the vertical movement of a movable arm of a hydraulic excavator is realized; the rotation of the upper rotation main body of the hydraulic excavator relative to the lower rotation main body is realized through controlling a rotation motor/generator by the rotation control system; a hybrid power drive mode is adopted, the potential energy of the movable arm and the kinetic energy of rotation can be directly converted into electric energy to be stored in the electric energy storage unit. According to the hybrid power hydraulic excavator system adopting movable arm closed control, the recycle and release of the potential energy of the movable arm are conveniently controlled, and the system has the advantages that the energy efficiency is high, the structure is simplified, the fuel consumption of a whole machine is low, the work efficiency and the energy utilization are high, and the like.
Description
Technical field
The present invention relates to a kind of hydraulic crawler excavator of hybrid power, particularly a kind of swing arm adopts the hybrid power hydraulic excavator system of enclosed control mode.
Background technology
Hydraulic crawler excavator in the course of the work due to swing arm, dipper and scraper bowl swing up and down and the gyration of slew gear very frequent, simultaneously, because each moving component inertia ratio is larger, so conventional valve prosecutor formula can be wasted large energy when digger revolving retarding braking and swing arm decline.For the waste that reduces this part energy and protection Hydraulic Elements, the potential energy that need to transfer hydraulic crawler excavator rotary braking kinetic energy and swing arm carries out recycling.The storage that the hybrid power type of drive proposed in recent years is the hydraulic crawler excavator action potential and the recycling condition of providing convenience, 2012.11.07 the patent of invention of authorizing, the control device of hybrid construction machine (CN200980110700.3) discloses a kind of like this system, adopt hydraulic motor, volume adjustable hydraulic pump coaxially is connected as energy conversion unit with motor generator set, on the one hand by the potential energy of excavator swing arm below and the kinetic energy of rotary braking, be converted into power storage in high-tension battery through hydraulic motor-driving generator, also can drive this part energy of volume adjustable hydraulic pump regeneration simultaneously, deficiency is that energy-recuperation system is more complicated, the regeneration conversion times is many, efficiency is low, the patent of invention of authorizing at 2012.03.07: in the control method of hybrid construction machine and hybrid construction machine (CN200880008679.1), the system that adopts generator and motor to form is independently controlled the gyration of excavator, deficiency be can only the recycling digger revolving kinetic energy of braking, and can not utilize the potential energy below swing arm, energy-storage units is not set in system yet.
Summary of the invention
The energy loss the objective of the invention is in order to overcome existing hybrid power hydraulic excavator drive system energy way of recycling existence is large, the deficiency of high in cost of production, a kind of hybrid power hydraulic excavator drive system of controlling based on the swing arm enclosed is provided, realize the high efficiente callback recycling of Hydraulic Excavator's Boom potential energy, adopt dynamoelectric machine that rotary braking kinetic energy and swing arm are transferred to potential energy and be converted into electric energy, store in the energy storage unit of setting up, by the unified recovery of two kinds of energy, complement each other and recycle, to reduce to greatest extent the energy consumption of hydraulic crawler excavator operation process.
The hybrid power hydraulic excavator system that the swing arm enclosed is controlled comprises internal combustion engine, banked direction control valves group, becomes displacement hydraulic pump, generator, energy storage unit, swing arm control system, rotary control system, scraper bowl hydraulic cylinder and dipper hydraulic cylinder; It is characterized in that:
Described swing arm control system is comprised of swing arm inverter, variable speed motor, control module, three hydraulic fluid port hydraulic pumps, accumulator, little latus rectum hydraulic control one-way valve, safety valve and swing arm hydraulic cylinder; Described energy storage unit is connected to the swing arm inverter, and the swing arm inverter is connected to the speed variable motor, variable speed Motor Drive three hydraulic fluid port hydraulic pumps, the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pumps
awith the rodless cavity of swing arm hydraulic cylinder, be connected, the 2nd oil inlet and outlet P
bwith the rod chamber of swing arm hydraulic cylinder, be connected, suction hydraulic fluid port P
twith accumulator, be connected; Control module gathers displacement signal or the rate signal of swing arm hydraulic cylinder, through the rotating speed of swing arm inverter control variable speed motor;
Described rotary control system is comprised of revolution inverter, revolution dynamoelectric machine, and the revolution inverter is connected with energy storage unit, and the revolution dynamoelectric machine is connected with the revolution inverter; The controlled unit controls of revolution inverter; The tach signal of control module collection revolution dynamoelectric machine is also controlled the duty of turning round dynamoelectric machine;
Described internal combustion engine is connected with change displacement hydraulic pump, generator, generator is connected with energy storage unit, the power storage that generator sends is in energy storage unit, energy storage unit is connected with swing arm inverter, revolution inverter, energy storage unit is variable speed motor, the power supply of revolution dynamoelectric machine, internal combustion engine drive becomes displacement hydraulic pump, drives the generator generating simultaneously.
Described charger is connected with energy storage unit, and charger is connected on power supply.
The invention has the advantages that:
1. the swing arm hydraulic cylinder adopts three hydraulic fluid port hydraulic pumps directly to control, and there is no restriction loss, the convenient recovery and reuse that realize controlling movable arm potential energy, and do not need the multiple energy exchange by hydraulic motor and generator, energy recovery efficiency is high.
2. three hydraulic fluid port hydraulic pumps are by the Motor Drive of variable speed, the hydraulic pump that such three hydraulic fluid port hydraulic pumps only need adopt fixed displacement just can, the control mode with respect to becoming discharge capacity, simplify the structure; Power drive adopts the hybrid power mode, is conducive to improve the rate of load condensate of internal combustion engine, makes internal combustion engine in the high efficiency fuel interval, thereby saves the complete machine fuel consume.
3. swing arm and revolution all adopt motor to drive, the potential energy of swing arm and rotating kinetic energy can be converted into power storage, and share an energy storage unit, the energy of storage can complement each other and utilize, and has improved efficiency and the capacity usage ratio of complete machine work.
The accompanying drawing explanation
Fig. 1 is hydraulic crawler excavator drive system fundamental diagram of the present invention.
In figure, 01-swing arm control system, 02-rotary control system, 1-internal combustion engine, 2-banked direction control valves group, 3-become displacement hydraulic pump, 4-generator, 5-energy storage unit, 6-variable speed motor, 7-control module, 8-tri-hydraulic fluid port hydraulic pumps, 9-accumulator, the little latus rectum hydraulic control one-way valve of 10-A, the little latus rectum hydraulic control one-way valve of 11-B, 12-A safety valve, 13-B safety valve, 14-swing arm hydraulic cylinder, 15-slewing motor inverter, 16-revolution dynamoelectric machine, 17-scraper bowl hydraulic cylinder, 18-dipper hydraulic cylinder, 19-swing arm motor inverter, 20-charger.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
As shown in Figure 1, the hybrid power hydraulic excavator drive system of swing arm enclosed control system comprises internal combustion engine 1, banked direction control valves group 2, becomes displacement hydraulic pump 3, generator 4, energy storage unit 5, swing arm control system 01, rotary control system 02, scraper bowl hydraulic cylinder 17 and dipper hydraulic cylinder 18.
But swing arm control system 01 is comprised of three hydraulic fluid port hydraulic pumps 8, accumulator 10,11,2 safety valves 12,13 of 9,2 little latus rectum hydraulic control one-way valves and the swing arm hydraulic cylinder 14 of swing arm inverter 19, variable speed motor 6, control module 7 balanced differential hydraulic cylinder area difference.In swing arm control system 01, energy storage unit 5 is connected to swing arm inverter 19, and swing arm inverter 19 is connected to variable speed motor 6, and variable speed motor 6 drives the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pump 8, three hydraulic fluid port hydraulic pumps 8
awith the rodless cavity of swing arm hydraulic cylinder 14, be connected, the 2nd oil inlet and outlet P
bwith the rod chamber of swing arm hydraulic cylinder 14, be connected, suction hydraulic fluid port P
twith accumulator 9, be connected; A safety valve 12 is in parallel with the little latus rectum hydraulic control one-way valve 10 of A, and the oil-in of the O mouth of A safety valve and the little latus rectum hydraulic control one-way valve of A meets the suction hydraulic fluid port P of three hydraulic fluid port hydraulic pumps 8
t, the oil-out of the P mouth of A safety valve and the little latus rectum hydraulic control one-way valve of A meets the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pumps 8
a; The B safety valve is in parallel with the little latus rectum hydraulic control one-way valve of B, and the oil-in of the O mouth of B safety valve and the little latus rectum hydraulic control one-way valve of B meets the suction hydraulic fluid port P of three hydraulic fluid port hydraulic pumps 8
t, the oil-out of the P mouth of B safety valve and the little latus rectum hydraulic control one-way valve of B meets the 2nd oil inlet and outlet P of three hydraulic fluid port hydraulic pumps
b.
Swing arm control system 01 is controlled swing arm hydraulic cylinder 14 and is realized moving up and down of Hydraulic Excavator's Boom, and rotary control system 02 is turned round dynamoelectric machine 16 by control and realized that hydraulic crawler excavator top rotating main body is with respect to the advance rotation of main body of bottom; Become displacement hydraulic pump 3 and drive power shovel hydraulic cylinder 17 and 18 work of dipper hydraulic cylinder by banked direction control valves group 2.
Control module 7 gathers displacement signal or the rate signal of swing arm hydraulic cylinder 14, controls the rotating speed of variable speed motor 8 through swing arm inverter 19; ; The control of the revolution controlled unit 7 of inverter 15; Control module 7 gathers the tach signal of revolution dynamoelectric machine 16 and controls the duty of turning round dynamoelectric machine 16.
During complete machine work, internal combustion engine 1 is connected with generator 4 with change displacement hydraulic pump 3, and internal combustion engine 1 drives and becomes displacement hydraulic pump 3, drives generator 4 generatings simultaneously; Generator 4 is connected with energy storage unit 5, the power storage that generator 4 sends is in energy storage unit 5, energy storage unit 5 is connected with revolution inverter 15 with swing arm inverter 19, and energy storage unit 5 is variable speed motor 6 and 16 power supplies of revolution dynamoelectric machine.Variable speed motor 6 drives three hydraulic fluid port hydraulic pumps 8, control module 7 gathers displacement or the tach signal of swing arm hydraulic cylinder 14, control the rotating speed of variable speed motor 6, the control of realization to three hydraulic fluid port hydraulic pump 8 rotating speeds and direction, thereby match with the discharge capacity of three hydraulic fluid port hydraulic pumps 8, improve the energy efficiency of system.
When swing arm descends, the piston rod of swing arm hydraulic cylinder 14 is regained, the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pumps 8
athe rodless cavity oil suction of slave arm hydraulic cylinder 14, the 2nd oil inlet and outlet P of three hydraulic fluid port hydraulic pumps 8
bto the rod chamber fuel feeding of swing arm hydraulic cylinder 14, the hydraulic oil that rodless cavity has more enters accumulator 9 through the suction hydraulic fluid port, realizes that potential energy reclaims; When moved arm lifting, the piston rod of swing arm hydraulic cylinder 14 stretches out, the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pumps 8
ato the rodless cavity fuel feeding, the 2nd oil inlet and outlet P
bfrom the rod chamber oil suction, the fluid that rodless cavity is inadequate is supplemented by accumulator 9.
When digger revolving starts, accelerates and at the uniform velocity turns round, revolution dynamoelectric machine 16 is the motor duty, and control module 7 is controlled revolution inverter 15, realizes that power storaging unit 5 is to revolution dynamoelectric machine 16 supply of electrical energy; When excavator, during in rotary braking, revolution dynamoelectric machine 16 be the generator duty, and control module 7 is controlled revolution inverters 15, and realizing that revolution dynamoelectric machine 16 generates electricity can be to power storaging unit 5 storage.
Near excavator work, power supply is arranged, or excavator leaves the place of power supply in, charger 20 is connected on power supply and charges, charger 20 is connected with energy storage unit 5, can adopt charger 20 to energy storage unit 5 chargings, electric energy supplement, or make machine in all-electric state.
Claims (2)
1. the hybrid power hydraulic excavator system that the swing arm enclosed is controlled, comprise internal combustion engine, banked direction control valves group, become displacement hydraulic pump, generator, energy storage unit, swing arm control system, rotary control system, scraper bowl hydraulic cylinder and dipper hydraulic cylinder; It is characterized in that:
Described swing arm control system is comprised of swing arm inverter, variable speed motor, control module, three hydraulic fluid port hydraulic pumps, accumulator, little latus rectum hydraulic control one-way valve, safety valve and swing arm hydraulic cylinder; Described energy storage unit is connected to the swing arm inverter, and the swing arm inverter is connected to the speed variable motor, variable speed Motor Drive three hydraulic fluid port hydraulic pumps, the 1st oil inlet and outlet P of three hydraulic fluid port hydraulic pumps
awith the rodless cavity of swing arm hydraulic cylinder, be connected, the 2nd oil inlet and outlet P
bwith the rod chamber of swing arm hydraulic cylinder, be connected, suction hydraulic fluid port P
twith accumulator, be connected; Control module gathers displacement signal or the rate signal of swing arm hydraulic cylinder, through the rotating speed of swing arm inverter control variable speed motor;
Described rotary control system is comprised of revolution inverter, revolution dynamoelectric machine, and the revolution inverter is connected with energy storage unit, and the revolution dynamoelectric machine is connected with the revolution inverter; The controlled unit controls of revolution inverter; The tach signal of control module collection revolution dynamoelectric machine is also controlled the duty of turning round dynamoelectric machine;
Described internal combustion engine is connected with change displacement hydraulic pump, generator, generator is connected with energy storage unit, the power storage that generator sends is in energy storage unit, energy storage unit is connected with swing arm inverter, revolution inverter, energy storage unit is variable speed motor, the power supply of revolution dynamoelectric machine, internal combustion engine drive becomes displacement hydraulic pump, drives the generator generating simultaneously.
2. the hybrid power hydraulic excavator system that a kind of swing arm enclosed according to claim 1 is controlled, it is characterized in that: described charger is connected with energy storage unit, and charger is connected on power supply.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924629A (en) * | 2014-04-15 | 2014-07-16 | 中国人民解放军63983部队 | Hydraulic excavator driving system with potential energy recovery function |
| CN107923153A (en) * | 2015-08-21 | 2018-04-17 | 斗山英维高株式会社 | The control method of engineering machinery and engineering machinery |
| CN109563850A (en) * | 2016-08-17 | 2019-04-02 | 福伊特专利有限公司 | Hydraulic-driven facility |
| CN115596032A (en) * | 2022-11-14 | 2023-01-13 | 中国矿业大学（Cn） | Energy-saving system for movable arm of oil-electricity hybrid power excavator and control method of energy-saving system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009024778A (en) * | 2007-07-19 | 2009-02-05 | Caterpillar Japan Ltd | Generator driving control device and working machine |
| CN101929169B (en) * | 2009-09-07 | 2012-02-22 | 太原理工大学 | Hydraulic excavator capable of working under cylinder fuel-cut |
| CN103215982B (en) * | 2013-04-16 | 2015-10-14 | 三一重机有限公司 | Hybrid power gyroscopic drive system and engineering machinery |
| CN103255790B (en) * | 2013-04-26 | 2015-04-15 | 太原理工大学 | Electric hydraulic excavator sharing direct-current bus |
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2013
- 2013-09-09 CN CN201310405323.4A patent/CN103452150B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103924629A (en) * | 2014-04-15 | 2014-07-16 | 中国人民解放军63983部队 | Hydraulic excavator driving system with potential energy recovery function |
| CN107923153A (en) * | 2015-08-21 | 2018-04-17 | 斗山英维高株式会社 | The control method of engineering machinery and engineering machinery |
| CN109563850A (en) * | 2016-08-17 | 2019-04-02 | 福伊特专利有限公司 | Hydraulic-driven facility |
| CN115596032A (en) * | 2022-11-14 | 2023-01-13 | 中国矿业大学（Cn） | Energy-saving system for movable arm of oil-electricity hybrid power excavator and control method of energy-saving system |
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| CN103452150B (en) | 2015-06-17 |
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