CN100577555C - Full hydraulic electric forklift electric system - Google Patents
Full hydraulic electric forklift electric system Download PDFInfo
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- CN100577555C CN100577555C CN200610050421A CN200610050421A CN100577555C CN 100577555 C CN100577555 C CN 100577555C CN 200610050421 A CN200610050421 A CN 200610050421A CN 200610050421 A CN200610050421 A CN 200610050421A CN 100577555 C CN100577555 C CN 100577555C
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Abstract
The overall hydraulic electric forklift electric system comprises the accumulator source, key switch, generator, audio-optical system, featuring in the accumulator as the energy source being divided by DC-DC potential transformer and low voltage electric source in two branches, with the low voltage source contacting the audio optical system through the said key switch, a controller mainly used for controlling the generator, the steering extender through turning on the switch and linking with the said controller, the high voltage electric power contacting the said controller and controlling the main contact to access the said generator, with the said controller connected with accelerator and micro stroke switch. It is a level free speed adjusting system made of the controller, generator, accelerator, with the traveling system running freely, stable, reliable from low speed to high speed, without energy waste.
Description
Technical field
The present invention relates to electri forklift, specifically full hydraulic electric forklift electric system.
Background technology
The electrical principle design form of existing hydraulic electric fork truck system is to drive controllable capacity pump as propulsion source under the constant speed state of 1650rpm with motor, the motor of this driving controllable capacity pump work only is used for the fork truck hydraulic efficiency pressure system that hoists, stream time is short, 15 minutes work systems only, motor adopts the shunt excitation mode, and its working speed is a constant speed state, cause the complete machine starting current big, power consumption is big, temperature height, defectives such as fork truck time of run weak point; And the control to motor realizes by PLC, this electric control method not only makes fork truck function imperfection, connection line also complicated (because electri forklift controller itself does not possess the fork truck characteristic functions, for example: do not have function of stepless speed regulation, do not have automatic diagnostic function etc.).
Summary of the invention
The technical assignment of the technical problem to be solved in the present invention and proposition is the defective that starting current is big, power consumption is big, temperature is high and connection line is complicated that overcomes the electric system existence of prior art, and a kind of new full hydraulic electric forklift electric system is provided.For this reason, the present invention is by the following technical solutions:
Full hydraulic electric forklift electric system, comprise power supply, key switch, a motor harmony photoelectric system, it is characterized in that by the DC-DC voltage transformer power supply being divided into the output of high tension supply and low potential source two-way as the energy with storage battery: low potential source is connected controller that acousto-optic electric system, one be mainly used in the described motor of control, and is further turned to delay timer through start switch and described controller bonded assembly through described key switch; High tension supply is connected described controller and is connected described motor through the main contactor that is controlled by described controller, is connected with accelerator and micro limit switch on described controller.
During work, to key switch, when key switch was connected, high tension supply was connected controller to battery feed through the DC-DC voltage transformer, the main contactor adhesive, when start switch, turn to the delay timer electromagnetic switch to connect, and connect motor by controller output, at this moment motor is in the idling mode of being set by controller, along with the displacement (pedal plate type) of accelerator, rotating speed of motor by low speed to high-speed cruising, hydraulic moving, steering swivel system work; When starting switch in a state of nature the time (cut off), turn to delay timer in the time of setting, still to make system be in the idling work state, one closes to the setting-up time system power supply; When micro limit switch is connected, by the operation of controller control motor, hydraulic lifting system works.
As the further of such scheme improved and replenish, the present invention also comprises following additional technical feature:
The excitation mode of described motor is series excitation, and work is made as 60 minutes.
Be connected with fault detector on the described controller.
Described low potential source is through the start switch electric-quantity display device.
Advantage of the present invention is:
1, the continuous speed regulation system that forms by controller, motor and accelerator, make running gear from a slow speed to quick running state freely, stable, reliable, and pump controller is designed to realize that the hydraulic moving infinite speed variation can realize hydraulic lifting control (connect the running of controller control motor driven gear pump by accelerator and realize the hydraulic moving infinite speed variation, connect the running of controller control motor driven gear pump by the switch that hoists again and realize hydraulic lifting control) again.
2, system just is being in idling mode (minimum speed of setting on director demon after the startup, work under slow speed of revolution by controller control motor), and install the time delays device additional, make hydrostatic steering system guarantee energy resource supply within a certain period of time, time-delay closing when not working, do not waste system capacity like this, the complete machine energy consumption reduces.
3, owing to be the work of single motor infinite speed variation, motor should possess the characteristic that the pump motor characteristic possesses movable motor again in addition, so the excitation mode of pump motor is series excitation, and is designed to 60 minutes with its work schedule, motor has satisfied the condition of hydraulic moving and hydraulic lifting like this.
4, system possesses the automatic diagnostic function of fault, shows failure code by fault detector, has made things convenient for technical service.
5, startability is good, because the characteristic of motor is low current during startup, can not cause the infringement of motor thus and start energy consumption little.
In a word, this electric System Design combines with static pressure transmission, hydraulic lifting system design, and make machine system improve efficient, reduced energy consumption, and simple in structure, manoeuvrable, increased functionality.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present invention.
Fig. 2 is the hydraulic scheme by electrical schematic diagram control of the present invention.
The specific embodiment
Full hydraulic electric forklift electric system as shown in Figure 1, comprise battery feed 61, key switch 68, motor 9 harmony photoelectric systems, battery feed 61 is divided into high tension supply and low potential source two-way output by DC-DC voltage transformer 615 with power supply as the energy: low potential source is connected controller 62 that acousto-optic electric systems, one are mainly used in control motor 9, and is further connected with controller 62 bonded assemblys through starting switch 610 and turn to delay timer 611 through key switch 68; High tension supply connects controller 62 and the main contactor through being controlled by controller 62 69 is connected motor 9, is connected with accelerator 65 and micro limit switch 621 on controller 62.And: the excitation mode of motor 9 is series excitation, and work is made as 60 minutes, is connected with fault detector 64 on the controller 62, and low potential source is connected electric-quantity display device 66 through starting switch 610.
The acousto-optic electric system comprises: reversing switch 612, horn switch button 613, steering indicating light Der Blink und Abblendschalter 614, turn signal swich 616, foot brake switch 617, headlamp switch 618, backing-up lamp and buzzer phone 619, dynamic loud-speaker and filter 620 etc.
During this electric system work, battery feed 61 arrives key switch 68 through DC-DC voltage transformer 615, when key switch 68 is connected, one road 48V power connection controller 62, main contactor 69 adhesives also show electric weight by electric-quantity display device 66, when starting switch 610 is connected, turn to delay timer 611 electromagnetic switchs to connect, and by controller 62 output connection motors 9, at this moment motor 9 is in the idling mode of being set by controller 62, along with the displacement (pedal plate type) of accelerator 65, the rotating speed of motor 9 by low speed to high-speed cruising, hydraulic moving, steering swivel system work; When starting switch 610 in a state of nature the time (cut off), turn to delay timer 611 in the time of setting, still to make system be in the idling work state, one closes to the setting-up time system power supply; When micro limit switch 621 is connected, by 9 operations of controller 62 control motors, hydraulic lifting system works.Another road 12V power connection acousto-optic electric system, when reversing switch 612 was connected, backing-up lamp buzzer phone 619 and instrument display 67 retreated indication and work simultaneously; When horn punch 613 is connected, filter and dynamic loud-speaker 620 work; When turn signal swich 616 left and right connections, steering indicating light Der Blink und Abblendschalter 614 and left steering lamp 623,622 work of right steering lamp; When foot brake switch 617 is connected, stoplight stop lamp 624 work; When headlamp switch 618 was connected, the I shelves were connected left side-marker lamp 625, right side-marker lamp 626 work, and the II shelves are connected front lit headlight 627.When breaking down in the system, export to fault detector 64 by controller 62 automatic diagnosises and show failure code.
Full hydraulic electric forklift hydraulic system as shown in Figure 2, the single motor 9 and the gear type pump 8 that are linked to each other by transmission constitute engine installation; Form inclined lift device 4 by lift oil tank 11 and dump ram 12; By the deflector 13 that is connected with pressure-gradient control valve 30 with turn to oil cylinder 14 to form steering hardware 1; Form travel driving unit 5 by double speed hydraulic motor 21, the hydraulic brake 23 and the Hydraulic Adjustable Speed valve 22 that are arranged on the motor; Hydraulic brake 23 is by walking relief brake valve 17 controls of control cock 2.Multiway valve 3 is made up of inclined valve 15 a, lift valve 16 etc.; Multiway valve 3 oil-feed valve block working connections are provided with the system pressure of a by pass valve 27 control inclined lift devices 4, and working connection and inclined valve 15 and the cavity that plays lift valve 16 communicate, and wherein play lift valve 16 and are provided with a by pass valve 28 and control the pressure that hoists; Inclined valve 15 connects dump ram 12, plays lift valve 16 and connects lift oil tank 11.Control cock 2 is made up of walking relief brake valve 17, speed change-over valve 18 etc.; Control cock 2 oil-feed valve block working connections are provided with reducing valve 26 control presssures, speed change-over valve 18 1 hydraulic fluid ports are connected with secondary pressure regulating valve 24, another hydraulic fluid port is connected with the governor valve 22 of HM Hydraulic Motor, walking relief brake valve 17 1 hydraulic fluid ports are through back pressure valve 25 oil sump tanks 10, and another hydraulic fluid port is connected with HM Hydraulic Motor drg 23.Commutation brake activation valve 6 is made up of walking change-over valve 19, brake activation valve 20 etc.; Commutation brake activation valve 6 oil inlets are provided with by pass valve 29 control presssures; Walking change-over valve 17 meta oil sump tanks, two hydraulic fluid ports are connected with the forward and reverse hydraulic fluid port of HM Hydraulic Motor 21 respectively in addition; Brake activation valve 20 is connected between walking change-over valve 19 and the HM Hydraulic Motor 21.Pressure transfer valve 7 is made up of secondary pressure regulating valve 24 and back pressure valve 25 etc.; Secondary pressure regulating valve 24 is connected with gear type pump 8 oil outlets with control cock 2, and back pressure valve 25 is connected between oil return line and the fuel tank 10.The loop that is made of control cock 2, gear type pump 8, double speed hydraulic motor 21, commutation brake activation valve 6, pressure transfer valve 7 is as the Hydraulic Adjustable Speed loop.
Below in conjunction with Fig. 1 and Fig. 2, the work of this electric system of more detailed description:
As the energy, when key switch 68 was opened, with 48V and 12V power connection, at this moment main contactor 69 adhesive systems switched on by DC-DC voltage transformer 615 with storage battery 61.
When tapping foot-operated accelerator 65, starting switch 610 opens that (starting switch is arranged in the accelerator, pin taps the accelerator pedal starting switch and promptly opens), at this moment single motor 9 direct driven gear pump 8 tickovers of controller 62 controls (idling speed is set by director demon ginseng speed), flow leads to hydraulic efficiency pressure system, thereby satisfy the discharge capacity demand of deflector 13, reach the function that realizes the fork truck pivot stud.
By handling moving forward and backward and leading to the speed of travel of HM Hydraulic Motor 21 control fork trucks by the stroke of pedal accelerator 65 through the rotating speed of controller 62 control motors 9 with the discharge capacity of pinion pump 8 of walking change-over valve 19 conversion fork trucks; When unclamping accelerator 65 and depress brake activation valve 20, the A of throttling confining liquid pressure motor 21, B oil duct are realized braking.
Thereby speed change-over valve 18 and the secondary pressure regulating valve in excess pressure transfer valve 7 24 handled in the control cock 2 realize that the Hydraulic Adjustable Speed valve 22 in high pressure, low pressure and the process HM Hydraulic Motor 21 reaches the climbing walking function and the high-speed row stop ﹠ go function of fork truck; By the function of walking relief brake valve 17 conversion walking work and system unloaded in the control cock 2, and realize hand braking by the hydraulic brake 23 that the braking shelves in the control cock 2 lead in the HM Hydraulic Motor 21.
A micro limit switch 621 has respectively been adorned in rising on lift valve 16 and the inclined valve 15 in multiway valve 3, and closed controller 62 control motors 9 driven gear pumps 8 full speed runnings of connecting of the travel switch that it installs additional when having handled lift valve 16 make fork truck reach the landing function; Same principle makes fork truck reach tilt function when handling inclined valve 15.
Under the single motor 9 idling work states of controller 62 controls, can make energy satisfy the demand of steering swivel system, can play the effect of underload, few energy consumption again, in normal operation, because the pressure-gradient control valve 30 of deflector 13 configurations, make the fork-truck steering sensitivity, and guarantee that when any action, fork truck has the action that preferentially turns to all the time.
When starting switch 610 in a state of nature the time (cut off), turn to delay timer 611 in the time of setting, still to make system be in the idling work state, one closes (delay time is set) to the setting-up time system power supply in turning to delay timer, guaranteed like this in inactive certain hour, still can guarantee to turn to function.
When system break down or during operation mistake by the automatic diagnostic function in the controller 62, on fault detector 64, show failure code with digital form, made things convenient for technical service.
Adopt the infinite speed variation design to make fork truck have the good characteristics of the acceleration capability of startup, by idling starting state and time delays function, and starting current and the low characteristics of low cruise electric current, guaranteed that fork truck has fabulous consumption reduction performance.
Adopt electricity meter 66 display system electric weight.
Claims (4)
1, full hydraulic electric forklift electric system, comprise battery feed (61), key switch (68), a motor (9) harmony photoelectric system, it is characterized in that being divided into high tension supply and low potential source two-way output as the energy by DC-DC voltage transformer (615) with battery feed (61): low potential source is connected controller (62) that acousto-optic electric system, one be mainly used in the described motor of control, and is further connected with described controller (62) bonded assembly through starting switch (610) and turn to delay timer (611) through described key switch (68); High tension supply connects described controller (62) and the main contactor through being controlled by described controller (62) (69) is connected described motor (9), is connected with accelerator (65) and micro limit switch (621) on described controller (62).
2, full hydraulic electric forklift electric system according to claim 1, the excitation mode that it is characterized in that described motor (9) is series excitation, work is made as 60 minutes.
3, full hydraulic electric forklift electric system according to claim 1 and 2 is characterized in that being connected with on the described controller (62) fault detector (64).
4, full hydraulic electric forklift electric system according to claim 1 is characterized in that described low potential source is through starting switch (610) connection electric-quantity display device (66).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610050421A CN100577555C (en) | 2006-04-19 | 2006-04-19 | Full hydraulic electric forklift electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610050421A CN100577555C (en) | 2006-04-19 | 2006-04-19 | Full hydraulic electric forklift electric system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101058396A CN101058396A (en) | 2007-10-24 |
| CN100577555C true CN100577555C (en) | 2010-01-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610050421A Expired - Fee Related CN100577555C (en) | 2006-04-19 | 2006-04-19 | Full hydraulic electric forklift electric system |
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| Country | Link |
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| CN (1) | CN100577555C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2471217B (en) * | 2008-02-04 | 2012-04-25 | Zhejiang Jiali Technology Co Ltd | A full hydraulic AC electrical forklift |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076972U (en) * | 1990-11-21 | 1991-05-15 | 彭昌宗 | Fork lift truck energy-saving hydraulic control system |
| CN2883306Y (en) * | 2006-04-19 | 2007-03-28 | 浙江佳力科技股份有限公司 | Electrical system of whole hydraulic electric fork lifter |
-
2006
- 2006-04-19 CN CN200610050421A patent/CN100577555C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2076972U (en) * | 1990-11-21 | 1991-05-15 | 彭昌宗 | Fork lift truck energy-saving hydraulic control system |
| CN2883306Y (en) * | 2006-04-19 | 2007-03-28 | 浙江佳力科技股份有限公司 | Electrical system of whole hydraulic electric fork lifter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101058396A (en) | 2007-10-24 |
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Effective date of registration: 20170323 Address after: Xiaoshan District Guali town friendship village Hangzhou city Zhejiang province 311241 Patentee after: Zhejiang Jiali explosion-proof special vehicle technology Co Ltd Address before: Guali town in Xiaoshan District of Hangzhou City, Zhejiang province 311241 Patentee before: Zhejiang Jiali Technology Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100106 Termination date: 20210419 |