CN108612138A - Green novel energy source scraper - Google Patents

Green novel energy source scraper Download PDF

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Publication number
CN108612138A
CN108612138A CN201810676520.2A CN201810676520A CN108612138A CN 108612138 A CN108612138 A CN 108612138A CN 201810676520 A CN201810676520 A CN 201810676520A CN 108612138 A CN108612138 A CN 108612138A
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CN
China
Prior art keywords
battery
scraper
srd
energy source
microprocessor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810676520.2A
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Chinese (zh)
Inventor
李强
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAOYOU INSTITUTE OF DALIAN UNIVERSITY OF TECHNOLOGY Co Ltd
Original Assignee
GAOYOU INSTITUTE OF DALIAN UNIVERSITY OF TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAOYOU INSTITUTE OF DALIAN UNIVERSITY OF TECHNOLOGY Co Ltd filed Critical GAOYOU INSTITUTE OF DALIAN UNIVERSITY OF TECHNOLOGY Co Ltd
Priority to CN201810676520.2A priority Critical patent/CN108612138A/en
Publication of CN108612138A publication Critical patent/CN108612138A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00

Abstract

The invention discloses a kind of green novel energy source scrapers, belong to underground mine production technique field, wherein, a kind of green novel energy source scraper, wherein, cell apparatus gives microprocessor center feed, cell apparatus to be connected with SRD by switching circuit by DC power converter, and SRD is connected with operating mechanism;The microprocessor center controls switching circuit and SRD respectively;The battery management circuit receives the data of battery pack, and microprocessor center is read the battery pack data that battery management circuit is received and shown in display screen, and microprocessor center controls the action of electric battery electrifier structure.The present invention has simple in structure, and stability is high, is not limited, not can cause environmental pollution by distance, unobscured feature, while such scraper system can reduce hydraulic slip, reduce mechanical wear, extend the hydraulic oil replacement cycle, reduce production cost.

Description

Green novel energy source scraper
Technical field
The present invention relates to a kind of green novel energy source scrapers, belong to underground mine production technique field.
Background technology
Switched reluctance motor speed control system (Switched Reluctance Drive:SRD it is) after frequency control system The latest generation continuous speed regulation system to grow up after system, Speed Regulating System of Brushless DC Motor is collection modern microelectronic skill Light that art, digital technology, power electronic technique, infrared electro technology and modern electromagnetic, design and manufacturing technology are integrated, Mechanical, electrical integration new and high technology.It has the advantages that governing system has both direct current, two class governing systems of exchange.The economy such as English, U.S. Developed country is more early to the research starting of switched reluctance motor speed control system, and has obtained remarkable result, product power grade From several w until hundreds of kw, it is widely used in the fields such as household electrical appliance, Aeronautics and Astronautics, electronics, machinery and electric vehicle.
Electric LHD, diesel LHD are widely used in the mining of underground, and electric LHD has structure Succinctly, easy to operate, work efficiency is high, it is easy to maintenance, there is no the characteristics of air pollution, however limited the radius of clean-up by cable 90 meters are usually no more than, cable bad rate height causes cost of winning to rise, and cable box not only limits the visual field, can also cause weight The heart is excessively high, reduces the stability of complete machine.The characteristics of diesel LHD has operating distance unrestricted, and work efficiency is high, so And diesel engine maintaining is cumbersome, complicated, exhaust emissions causes secondary pollution.Scraper traditional simultaneously is generally by overflow Valve control oil pump pressure, such mode can cause hydraulic slip, increase mechanical wear, cause the hydraulic oil replacement cycle frequent, increase Big production cost.And battery is called gold capacitance, farad capacitor, it, come energy storage, belongs to electric double layer electricity by polarized electrolytic matter One kind of appearance.Since the process of its energy storage does not chemically react, this thermal energy storage process is reversible, just because of this is electric Holding battery can be hundreds thousand of time with repeated charge.Battery generally uses active carbon electrode material, has adsorption area big, electrostatic storage More features is deposited, is widely used in new-energy automobile.
Invention content
Present invention aims at a kind of green novel energy source scraper is provided, there is simple in structure, stability height, not by distance Limitation, not can cause environmental pollution, unobscured feature, while such scraper system can reduce hydraulic slip, reduce Mechanical wear extends the hydraulic oil replacement cycle, reduces production cost.
To solve the above problems, a kind of green novel energy source scraper of present invention offer, a kind of green novel energy source scraper, In, cell apparatus gives microprocessor center feed, cell apparatus to pass through switching circuit and SRD phases by DC power converter Even, SRD is connected with operating mechanism;The microprocessor center controls switching circuit and SRD respectively;The cell apparatus includes electricity Pond group, battery management circuit, electric battery electrifier structure, battery storing case, battery pack are mounted in battery storing case, battery storing case It is arranged on scraper after-frame, electric battery electrifier structure is connected with battery pack, and the battery management circuit receives the data of battery pack, The data include charged state, voltage, electric current, the temperature of battery pack;It reads battery management circuit and is connect in microprocessor center The battery pack data of receipts simultaneously show that microprocessor center controls the action of electric battery electrifier structure in display screen.
Battery is called gold capacitance, farad capacitor, it, come energy storage, belongs to the one of electric double layer capacitance by polarized electrolytic matter Kind.Since the process of its energy storage does not chemically react, this thermal energy storage process is reversible, just because of this capacitor batteries It can be hundreds thousand of times with repeated charge.Battery generally uses active carbon electrode material, has adsorption area big, more than electrostatic storage Feature.
Preferably, SRD includes dc switch reluctance motor and alignment circuit, and the microprocessor is centrally through control speed governing The rotating speed of circuit control dc switch reluctance motor.This motor has:Electric machine structure is simple, firm, easy to maintain or even exempt to tie up Shield, starts and torque is big when low speed, starting current is small;High speed invariable power area range is wide, performance is good, in broad rotating speed and power model All there is height output and high efficiency, control technology is ripe, and frequency setting is simple, is easy and hydraulic test is mating in enclosing.Due to tool There is the above advantage, is well suited for load fluctuation frequent scraper and power is provided.The motor of constant speed is become by alignment circuit Speed change is adjustable, not only energy saving also to extend service time of battery.
Switched reluctance motor speed control system is developed after frequency conversion speed-adjusting system, Speed Regulating System of Brushless DC Motor The latest generation continuous speed regulation system to get up is collection modern microelectronic technology, digital technology, power electronic technique, infrared electro The light, mechanical, electrical integrated new and high technology that technology and modern electromagnetic, design and manufacturing technology are integrated.It has speed governing system System has both the advantages of direct current, two class governing system of exchange.English, Mei Deng developed countries are to switched reluctance motor speed control system Research starting it is more early, and obtained remarkable result, product power grade, until hundreds of kw, is widely used in household electric from several w The fields such as device, Aeronautics and Astronautics, electronics, machinery and electric vehicle.
Preferably, SRD is connect by spline with oil pump, and oil pump provides hydraulic power to operating mechanism;The fuel pump outlet Equipped with pressure detector, fuel pump outlet pressure feedback to microprocessor center, microprocessor center are controlled SRD by pressure detector Adjust rotating speed.The pressure of the fast oil pump output of dc switch reluctance motor rotating speed is with regard to big, and vice versa, by the direct current for adjusting SRD Switched reluctance machines rotational speed regulation fuel pump output pressure can reduce hydraulic slip, reduce mechanical wear, reduce hydraulic oil temperature Degree extends the hydraulic oil replacement cycle, reduces production cost.
Preferably, battery storing case is placed on two side bottom of motor of scraper after-frame, and the battery storing case is rectangular Shape, battery storing case are equipped with several chambers, and each chamber roof is equipped with head cover, and cap base is equipped with fan, cavity bottom Equipped with several through-holes, cavity bottom is equipped with damping device, and chamber two side is equipped with baffle, between the baffle and chamber sidewall Equipped with shaft, baffle can be rotated down along shaft, and baffle is 90 degree with the maximum angle that chamber sidewall is formed;Each chamber One piece of battery can be at least put down, battery forms battery pack in the battery storing case.The battery storing case of chamber shape can increase The mechanical strength of strong babinet, reducing influences between battery, is conducive to heat dissipation, baffle is for fixing battery, while the damping of cavity bottom Device is conducive to scraper and carries out damping to battery in work process.
Preferably, the electric battery electrifier structure include charging box, charging motor, gear, baffler, position sensor, Penetration pipe, rack, socket connector;In charging box, penetration pipe front end is worn for the charging motor, gear, penetration pipe, setting Overcharge box is connected with socket connector, and penetration pipe rear end side is equipped with rack, and barrier is equipped between rack and socket connector Plate, baffler are equipped with position sensor;The rack and baffler are respectively positioned on inside charging box, and the charging motor passes through Wheel and rack engaged transmission, the socket connector are connected by the conducting wire in penetration pipe with battery pack, microprocessor center Control charging motor rotation.When charging is required, driver manipulates scraper and reaches designated position, control charging motor fortune It is dynamic, socket connector is stretched out, when the position sensor on baffler touches charging box wall, indicates that socket connector reaches Designated position, position sensor feedback signal give microprocessor center, microprocessor center control charging motor to be stopped, It is charged.
Preferably, the switching circuit includes power contactor, protection circuit, and it is to protect motor not to protect the effect of circuit It has received and has flowed through crushing evil.
Preferably, the battery is asymmetrical high-power capacitor battery.It has energy density big, does not generate primary and two Secondary environment pollutes, and discharge current is big, and charging rate is fast, and the characteristics of having extended cycle life, therefore, battery does not have to carry out replaceable fill Electricity can fill to walk, convenient and time-saving and safe and reliable.
Operation principle:It is micro- to start DC power converter when the present invention is run first to generate the operation power of 24 volts of direct current Processor center feed, microprocessor center starting switch circuit power on for 4 system of dc switch reluctance motor, while micro- Processor center gives mono- tachometer value of SRD, and the dc switch reluctance motor 4 of SRD is made to be run under given rotating speed.Battery uses Capacity is 300v, 200A. capacitive battery, it is primary it is fully charged after can make scraper continuous work 4 hours or so, scraper work When battery management system detect the working condition of battery always, after electricity drops to regulation, microprocessor center sends out alarm It reminds driver that scraper is reached charging station to charge, battery management module sending signal is in microprocessor after charging The heart, microprocessor center control display screen show battery capacity, while controlling electric battery electrifier structure and stopping charging.Battery needs fill When electric, microprocessor center control charging motor rotation, charging motor band moving gear rotate, the rack engaged with gear with Movement, so that rack is moved in a straight line, penetration pipe pushed out, when the position sensor on penetration pipe touches charging box When inner wall, i.e., socket connector reaches precalculated position, and charging motor stop motion is charged.When stopping charging, motor is anti- Turn.
Advantageous effect of the present invention:
The present invention use capacitor batteries, it have the charging time is short, service life is long, good temp characteristic, it is energy saving and The features such as environmentally protective, eliminates the structure of cable box, make scraper center of gravity reduction, widen the vision, at the same have it is simple in structure, The battery storing case of the characteristics of not limited, not can cause environmental pollution by distance, chamber shape can enhance the machinery of babinet by force It spends, is influenced between reduction battery, be conducive to heat dissipation, baffle is for fixing battery, while the damping device of cavity bottom is conducive to scraper Vehicle carries out damping in work process to battery, and the design of charging mechanism facilitates charging, by the dc switch magnetic resistance for adjusting SRD Motor speed adjusts fuel pump output pressure, can reduce hydraulic slip, reduce mechanical wear, reduce hydraulic fluid temperature, extend liquid The pressure oil replacement cycle reduces production cost.
Description of the drawings
Fig. 1 is the structural diagram of the present invention;
Fig. 2 is chamber structure schematic diagram of the present invention;
Fig. 3 is the charging mechanism schematic diagram of the present invention;
Fig. 4 is work flow diagram of the present invention;
Wherein:1, scraper after-frame;2, battery storing case;3, chamber;31, damping device;32, fan;4, dc switch Reluctance motor;5, charging box;51, charging motor;52, baffler;53, penetration pipe;54, socket connector.
Specific implementation mode
As described below is only the embodiment of the present invention, is not intended to limit the scope of the invention.
Embodiment 1:
A kind of green novel energy source scraper, wherein cell apparatus is supplied by DC power converter to microprocessor center Electricity, cell apparatus are connected by switching circuit with system, and SRD is connected with operating mechanism;The microprocessor center controls respectively Switching circuit and SRD;The cell apparatus includes battery pack, battery management circuit, electric battery electrifier structure, battery storing case 2, electricity Pond group is mounted in battery storing case 2, and battery storing case 2 is arranged on scraper after-frame 1, electric battery electrifier structure and battery pack phase Even, the battery management circuit receives the data of battery pack, and the data include charged state, voltage, electric current, the temperature of battery pack Degree;It reads the battery pack data that battery management circuit is received and is shown in display screen, microprocessor center in microprocessor center Control the action of electric battery electrifier structure.
The logical electric discharge that battery passes through capacitance when work is system power supply, driving SRD work, and then drive operating mechanism fortune It is dynamic.
Embodiment 2:
With reference to Figure of description, the present invention provides a kind of green novel energy source scraper, wherein battery is asymmetric big power Capacitor batteries, cell apparatus give microprocessor center feed by DC power converter, cell apparatus by switching circuit with SRD is connected, and SRD includes dc switch reluctance motor 4 and alignment circuit, and the microprocessor is centrally through control alignment circuit control The rotating speed of dc switch reluctance motor 4 processed;The switching circuit includes power contactor, protection circuit.SRD passes through spline and oil Pump connection, oil pump provide hydraulic power to operating mechanism;The fuel pump outlet is equipped with pressure detector, and pressure detector is by oil pump To microprocessor center, microprocessor center controls SRD adjustment rotating speeds and changes fuel pump output pressure outlet pressure feedback.
The microprocessor center controls switching circuit and SRD respectively;The cell apparatus includes battery pack, battery management Circuit, electric battery electrifier structure, battery storing case 2, battery pack are mounted in battery storing case 2, and battery storing case 2 is arranged in scraper On machine after-frame 1, electric battery electrifier structure is connected with battery pack, and the battery management circuit receives the data of battery pack, the data Charged state, voltage, electric current, temperature including battery pack;Read the battery that battery management circuit is received in microprocessor center Group data simultaneously show that microprocessor center controls the action of electric battery electrifier structure in display screen.
Battery storing case 2 is placed on 4 liang of side bottoms of dc switch reluctance motor of scraper scraper after-frame 1, the electricity Pond storage box 2 is rectangular shape, and battery storing case 2 is equipped with several chambers 3, and 3 top of each chamber is equipped with head cover, cap base Equipped with fan 32,3 bottom of chamber is equipped with several through-holes, and 3 bottom of chamber is equipped with damping device 31, and 3 two side of chamber is equipped with gear Plate is equipped with shaft between 3 side wall of the baffle and chamber, and baffle can be rotated down along shaft, and baffle is formed with 3 side wall of chamber Maximum angle is 90 degree;Each chamber 3 can at least put down one piece of battery, and battery forms battery in the battery storing case Group.
The electric battery electrifier structure includes charging box 5, charging motor 51, gear, baffler 52, position sensor, wears Spool 53, rack, socket connector 54;The charging motor 51, gear, penetration pipe 53 are arranged in charging box 5, penetration pipe 53 front ends are connected across charging box 5 with socket connector 54, and 53 rear end side of penetration pipe is equipped with rack, rack and socket connector Baffler 52 is equipped between 54, baffler is equipped with position sensor towards the side of socket connector;The rack and baffler 52 are respectively positioned on inside charging box 5, and for the charging motor 51 by wheel and rack engaged transmission, the socket connector 54 is logical The conducting wire crossed in penetration pipe 53 is connected with battery pack, and microprocessor center controls charging motor 51 and rotates.
Operation principle:It is micro- to start DC power converter when the present invention is run first to generate the operation power of 24 volts of direct current Processor center feed, microprocessor center starting switch circuit power on for 4 system of dc switch reluctance motor, while micro- Processor center gives mono- tachometer value of SRD, and the dc switch reluctance motor 4 of SRD is made to be run under given rotating speed.Battery uses Capacity is 300v, 200A. capacitive battery, it is primary it is fully charged after can make scraper continuous work 4 hours or so, scraper work When battery management system detect the working condition of battery always, after electricity drops to regulation, microprocessor center sends out alarm It reminds driver that scraper is reached charging station to charge, battery management module sending signal is in microprocessor after charging The heart, microprocessor center control display screen show battery capacity, while controlling electric battery electrifier structure and stopping charging.
When battery needs charging, microprocessor center controls charging motor 51 and rotates, and charging motor 51 is with moving gear Rotation, the rack engaged with gear move, so that rack is moved in a straight line, penetration pipe 53 is pushed out, when penetration pipe 53 therewith On position sensor 52 when touching the inner wall of charging box 5, i.e., socket connector 54 reaches precalculated position, charging motor 51 Stop motion is charged.When stopping charging, motor reversal.
Battery is called gold capacitance, farad capacitor, it, come energy storage, belongs to electric double layer capacitance by polarized electrolytic matter It is a kind of.Since the process of its energy storage does not chemically react, this thermal energy storage process is reversible, just because of this capacitance is electric It pond can be hundreds thousand of times with repeated charge.Battery generally uses active carbon electrode material, has adsorption area big, and electrostatic storage is more The characteristics of.
Switched reluctance motor speed control system is developed after frequency conversion speed-adjusting system, Speed Regulating System of Brushless DC Motor The latest generation continuous speed regulation system to get up is collection modern microelectronic technology, digital technology, power electronic technique, infrared electro The light, mechanical, electrical integrated new and high technology that technology and modern electromagnetic, design and manufacturing technology are integrated.It has speed governing system System has both the advantages of direct current, two class governing system of exchange.English, Mei Deng developed countries are to switched reluctance motor speed control system Research starting it is more early, and obtained remarkable result, product power grade, until hundreds of kw, is widely used in household electric from several w The fields such as device, Aeronautics and Astronautics, electronics, machinery and electric vehicle.
The present invention use capacitor batteries, it have the charging time is short, service life is long, good temp characteristic, it is energy saving and The features such as environmentally protective, eliminates the structure of cable box, make scraper center of gravity reduction, widen the vision, at the same have it is simple in structure, The battery storing case of the characteristics of not limited, not can cause environmental pollution by distance, chamber shape can enhance the machinery of babinet by force It spends, is influenced between reduction battery, be conducive to heat dissipation, baffle is for fixing battery, while the damping device of cavity bottom is conducive to scraper Vehicle carries out damping in work process to battery, and the design of charging mechanism facilitates charging, by the dc switch magnetic resistance for adjusting SRD Motor speed adjusts fuel pump output pressure, can reduce hydraulic slip, reduce mechanical wear, reduce hydraulic fluid temperature, extend liquid The pressure oil replacement cycle reduces production cost.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills Art field, is included within the scope of the present invention.

Claims (7)

1. a kind of green novel energy source scraper, which is characterized in that cell apparatus is by DC power converter in microprocessor The heart is powered, and cell apparatus is connected by switching circuit with system, and SRD is connected with operating mechanism;The microprocessor center difference Control switching circuit and SRD;The cell apparatus includes battery pack, battery management circuit, electric battery electrifier structure, battery storing case (2), battery pack is mounted in battery storing case (2), and battery storing case (2) is arranged on scraper after-frame (1), electric battery electrifier Structure is connected with battery pack, and the battery management circuit receives the data of battery pack, the data include battery pack charged state, Voltage, electric current, temperature;Microprocessor center is read the battery pack data that battery management circuit is received and is shown in display screen, Microprocessor center controls the action of electric battery electrifier structure, and the electric battery electrifier structure includes charging box (5), charging motor (51), gear, baffler (52), position sensor, penetration pipe (53), rack, socket connector (54);The charging motor (51), in charging box (5), penetration pipe (53) front end passes through charging box (5) and socket connector for gear, penetration pipe (53) setting (54) it is connected, penetration pipe (53) rear end side is equipped with rack, and baffler (52), resistance are equipped between rack and socket connector (54) Partition board is equipped with position sensor towards the side of socket connector;The rack and baffler (52) are respectively positioned in charging box (5) Portion, the charging motor (51) pass through penetration pipe (53) by wheel and rack engaged transmission, the socket connector (54) Interior conducting wire is connected with battery pack, and microprocessor center controls charging motor (51) and rotates.
2. a kind of green novel energy source scraper according to claim 1, which is characterized in that the SRD is switching magnetic-resistance electricity Motivation governing system, the switched reluctance motor speed control system include dc switch reluctance motor (4) and alignment circuit, described Alignment circuit includes power inverter, controller, rotor position detector, and the microprocessor is centrally through control alignment circuit Control the rotating speed of dc switch reluctance motor (4).
3. a kind of green novel energy source scraper according to claim 1 or 2, which is characterized in that SRD passes through spline and oil pump Connection, oil pump provide hydraulic power to operating mechanism;The fuel pump outlet is equipped with pressure detector, and pressure detector goes out oil pump To microprocessor center, microprocessor center controls SRD and adjusts rotating speed mouth pressure feedback.
4. a kind of green novel energy source scraper according to claim 1, which is characterized in that battery storing case (2) is placed on (4) two side bottom of motor of scraper after-frame (1), the battery storing case (2) are rectangular shape, and battery storing case (2) is set There are several chambers (3), head cover is equipped at the top of each chamber (3), cap base is equipped with fan (32), and chamber (3) is if bottom is equipped with Dry through-hole, chamber (3) bottom are equipped with damping device (31), and chamber (3) two side is equipped with baffle, the baffle and chamber (3) Shaft is equipped between side wall, baffle can be rotated down along shaft, and baffle is 90 degree with the maximum angle that chamber (3) side wall is formed; Each chamber (3) can at least put down one piece of battery, and battery forms battery pack in the battery storing case.
5. a kind of green novel energy source scraper according to claim 1, which is characterized in that the switching circuit includes power supply Contactor, protection circuit.
6. a kind of green novel energy source scraper according to claim 1, which is characterized in that the battery is asymmetric big dynamic Power capacitor batteries.
7. a kind of green novel energy source scraper according to claim 4, which is characterized in that the damping device is sponge.
CN201810676520.2A 2018-06-27 2018-06-27 Green novel energy source scraper Pending CN108612138A (en)

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Cited By (5)

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CN109532444A (en) * 2019-01-09 2019-03-29 湖北金诚信矿业服务有限公司 A kind of electric LHD
CN109532443A (en) * 2019-01-09 2019-03-29 湖北金诚信矿业服务有限公司 A kind of electric LHD
CN109624680A (en) * 2018-12-07 2019-04-16 湖北金诚信矿业服务有限公司 A kind of electric LHD
CN110984981A (en) * 2019-12-30 2020-04-10 国网山东省电力公司淄博供电公司 Bottom dump forklift based on switched reluctance motor
CN111731113A (en) * 2019-03-25 2020-10-02 北京宸控科技有限公司 Pure electric shovel car

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Publication number Priority date Publication date Assignee Title
CN109624680A (en) * 2018-12-07 2019-04-16 湖北金诚信矿业服务有限公司 A kind of electric LHD
CN109532444A (en) * 2019-01-09 2019-03-29 湖北金诚信矿业服务有限公司 A kind of electric LHD
CN109532443A (en) * 2019-01-09 2019-03-29 湖北金诚信矿业服务有限公司 A kind of electric LHD
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CN110984981A (en) * 2019-12-30 2020-04-10 国网山东省电力公司淄博供电公司 Bottom dump forklift based on switched reluctance motor

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