CN110065912A - The linkage interlocked control system of electri forklift - Google Patents
The linkage interlocked control system of electri forklift Download PDFInfo
- Publication number
- CN110065912A CN110065912A CN201910429658.7A CN201910429658A CN110065912A CN 110065912 A CN110065912 A CN 110065912A CN 201910429658 A CN201910429658 A CN 201910429658A CN 110065912 A CN110065912 A CN 110065912A
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- CN
- China
- Prior art keywords
- motor drive
- motor
- raising
- mouth
- elevating ram
- Prior art date
- 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.)
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- 230000003028 elevating effect Effects 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 239000012530 fluid Substances 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009439 industrial construction Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- GOLXNESZZPUPJE-UHFFFAOYSA-N spiromesifen Chemical compound CC1=CC(C)=CC(C)=C1C(C(O1)=O)=C(OC(=O)CC(C)(C)C)C11CCCC1 GOLXNESZZPUPJE-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/22—Hydraulic devices or systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
- B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
- B66F9/075—Constructional features or details
- B66F9/20—Means for actuating or controlling masts, platforms, or forks
- B66F9/24—Electrical devices or systems
Abstract
The present invention announces a kind of linkage interlocked control system of electri forklift, belongs to special type engineering machinery field of intelligent control technology.Including for AC motor drive, walking mechanism, movable motor, raising hydraulic system, gear pump；Raising hydraulic system includes raising multi-way valve, elevating ram I, elevating ram II；AC motor drive control connection pump control motor and movable motor；Pump control motor control tooth connection wheel pump, pump control motor are connected with current sensor II；Movable motor is connected with current sensor I；Elevating ram I, elevating ram II are connected with pressure sensor；Pressure sensor, current sensor I, current sensor II are connected to AC motor drive.The linkage interlocked control system of electri forklift of the present invention can protect battery to greatest extent, while can avoid safety hazards caused by maloperation, improve the operating efficiency of electri forklift, reduce energy consumption, improve driver comfort.
Description
Technical field
The present invention relates to electri forklift technical field, specifically a kind of linkage interlocked control system of electri forklift belongs to spy
Kind engineering machinery field of intelligent control technology.
Background technique
Currently, electri forklift has been widely used in agricultural production and industrial construction in the whole world, it is indispensable special type
One of engineering machinery, therefore the requirement to its electric control system is higher and higher, traditional electric forklift running system and pallet fork
Hoisting system independent operating can arbitrarily operate hoisting system that is, during electric forklift running.
But when electri forklift promotes pallet fork in fully loaded driving process, battery is needed to discharge bigger electric current, especially
During fully loaded climbing, be easy to causeing battery is more than " 1C " electric discharge, especially lead-acid accumulator for it, is formed " over-discharge ", sternly
Ghost image rings battery service efficiency and service life, or even can cause electri forklift overturn accident because of maloperation.
Although some electri forklifts require to forbid raising pallet fork during walking, electric fork can be seriously affected in this way
The operating efficiency of vehicle, while the labor intensity of driver is improved, feeling of fatigue is brought to driver, influences working efficiency.
Summary of the invention
In order to overcome the deficiencies in the prior art, the present invention provides a kind of linkage interlocked control system of electri forklift.
The technical solution adopted by the present invention are as follows: a kind of linkage interlocked control system of electri forklift, including mentioned for walking mechanism
The gear pump of power is provided for the movable motor of power, and for raising hydraulic system；The raising hydraulic system includes raising
Multi-way valve, elevating ram I, elevating ram II；
It further include AC motor drive, AC motor drive control connection pump control motor and the movable motor；It is described
The pump controls motor control tooth connection wheel pump, and pump control motor is connected with current sensor II；
The movable motor is connected with current sensor I；
The elevating ram I, elevating ram II are connected with pressure sensor；
The pressure sensor, current sensor I, current sensor II are connected to the AC motor drive.
It is further: the gear pump is connected with overflow valve, check valve；The P mouth of gear pump respectively with the I of overflow valve
The F mouth connection of mouth, the oil inlet of check valve and raising multi-way valve；The oil outlet of the check valve and the G mouth company of raising multi-way valve
It connects；The J mouth of the overflow valve is connect with the C of raising multi-way valve mouth；
Raising multi-way valve one end is connected with control stick；
Governor valve is connected between raising multi-way valve and elevating ram I, elevating ram II；The A mouth and raising of the governor valve are more
The D mouth of road valve connects, and the B mouth of governor valve is connect with the rodless cavity of elevating ram I, elevating ram II respectively.
The AC motor drive is XCMG105；
The end BAT+ of AC motor drive, BAT- are connected with battery between end；
The end DI1 of AC motor drive is connected with system run switch；
The end DI2 of AC motor drive is connected with raising multichannel threshold switch；
The end DI3 of AC motor drive is connected with inclination multichannel threshold switch；
+ the 5V of AC motor drive, the end AI1 with GND connect the pressure sensor；
+ the 5V of AC motor drive, the end AI2 with GND connect the current sensor I；
+ the 5V of AC motor drive, the end AI3 with GND connect the current sensor II；
The end RXD, TXD and GND of AC motor drive is connected with display screen；
US, VS of AC motor drive connect the movable motor with the end WS；
The end UM, VM and WM of AC motor drive is connected with the pump control motor.
When electri forklift in the process of moving, the present invention can according to raising goods weight to pallet fork hoisting system limit electricity
Stream, limitation electric current directly can also be carried out to pallet fork hoisting system, such as: when raising cargo be more than rated load 30%, or
When electric forklift running system power is more than 200A, limitation hoisting system is the 30% of normal raising electric current.The present invention can be with
Limitation current ratio is adjusted according to operating condition by display screen, to avoid battery " over-discharge ".
Compared with prior art, the beneficial effects of the present invention are: the linkage interlocked control system of electri forklift can be to greatest extent
Protection battery, while can avoid safety hazards caused by maloperation, improve the operating efficiency of electri forklift, reduce energy
Consumption improves driver comfort.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
In figure: 1 battery, 2 system run switch, 3 raising multichannel threshold switch, 4 inclination multichannel threshold switch, 5 pressure sensors, 6
Current sensor I, 7 current sensors II, 8 display screens, 9 walking mechanisms, 10 raising multi-way valves, 11 check valves, 12 overflow valves, 13
Hydraulic oil container, 14 gear pumps, 15 control sticks, 16 governor valves, 17 elevating rams I, 18 elevating rams II, 19 movable motors, 20 pumps
Control motor, 21 AC motor drives.
Specific embodiment
The present invention will be further explained combined with specific embodiments below.
As shown in Figure 1, a kind of linkage interlocked control system of electri forklift, movable motor 19 is connect with walking mechanism 9, for row
It walks mechanism 9 and power is provided.Gear pump 14 is connected in raising hydraulic system, provides power source, pump control electricity for raising hydraulic system
Machine 20 controls tooth connection wheel pump 14, for driving gear pump 14 to operate.
Raising hydraulic system includes raising multi-way valve 10, elevating ram I 17, elevating ram II 18.The P mouth of gear pump 14 point
It is not connect with the F mouth of the I of overflow valve 12 mouth, the oil inlet of check valve 11 and raising multi-way valve 10；The oil outlet of check valve 11 with
The G mouth of raising multi-way valve 10 connects；The J mouth of overflow valve 12 is connect with the C of raising multi-way valve 10 mouth.10 one end of raising multi-way valve connects
It is connected to control stick 15, raising multi-way valve 10 is controlled by control stick 15.The D mouth company of the A mouth of governor valve 16 and raising multi-way valve 10
It connects, the B mouth of governor valve 16 is connect with the rodless cavity of elevating ram I 17, elevating ram II 18 respectively.
Pressure sensor 5 is mounted on the PT mouth of elevating ram I 17, elevating ram II 18, is used for real-time detection elevating ram I
17, the system pressure of elevating ram II 18, so that calculating pallet fork plays liter weight.Movable motor 19 is connected with current sensor I
6, current sensor I 6 is used to detect the running current of movable motor.Pump control motor 20 is connected with current sensor II 7, and electric current passes
Sensor II 7 is used to detect the running current of pump control motor 20.
AC motor drive 21 is XCMG105；
Battery 1 is connected between the end BAT+ of AC motor drive 21, the end BAT-；
The end DI1 of AC motor drive 21 connects system run switch 2；
The end DI2 of AC motor drive 21 connects raising multichannel threshold switch 3；The end the DI3 connection of AC motor drive 21 is inclined
Oblique multichannel threshold switch 4；Raising multichannel threshold switch 3, inclination multichannel threshold switch 4 are for triggering pump control electric motor starting；
+ the 5V of AC motor drive 21, the end AI1 with GND connect pressure sensor 5；
+ the 5V of AC motor drive 21, the end AI2 with GND connect current sensor I 6；
+ the 5V of AC motor drive 21, the end AI3 with GND connect current sensor II 7；
RXD, TXD of AC motor drive 21 connect display screen 8 with the end GND；
US, VS of AC motor drive 21 connect movable motor 19 with the end WS；
The end UM, VM and WM of AC motor drive 21 is connected with pump control motor 20.
After self-test passes through, when electri forklift in the process of moving, according to raising goods weight to pallet fork hoisting system limit
Electric current directly can also carry out limitation electric current to pallet fork hoisting system,
In the present embodiment:
When 30% that raising cargo is more than rated load, or when electric forklift running system power is more than 200A, raising is limited
System is the 30% of normal raising electric current.
This embodiment scheme can also adjust limitation current ratio according to operating condition by display screen, to avoid battery
" over-discharge "；This programme can avoid safety hazards caused by maloperation simultaneously, improve the operating efficiency of electri forklift, reduce energy
Consumption improves driver comfort.
The above is only a preferred embodiment of the present invention, meanwhile, without departing from the principle of the present invention, may be used also
To make several improvements and modifications, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (3)
1. a kind of linkage interlocked control system of electri forklift, including providing the movable motor (19) of power for walking mechanism (9), with
And the gear pump (14) of power is provided for raising hydraulic system；The raising hydraulic system includes raising multi-way valve (10), lifting
Oil cylinder I (17), elevating ram II (18)；
It is characterized by:
It further include AC motor drive (21), AC motor drive (21) control connection pump control motor (20) and the walking
Motor (19)；It is described
Pump control motor (20) control tooth connection wheel pump (14), pump control motor (20) are connected with current sensor II (7)；
The movable motor (19) is connected with current sensor I (6)；
The elevating ram I (17), elevating ram II (18) are connected with pressure sensor (5)；
The pressure sensor (5), current sensor I (6), current sensor II (7) are connected to the AC motor drive
(21).
2. the linkage interlocked control system of electri forklift according to claim 1, it is characterised in that: the gear pump (14) is even
It is connected to overflow valve (12), check valve (11)；The P mouth of gear pump (14) respectively with the I mouth of overflow valve (12), check valve (11) into
The connection of the F mouth of hydraulic fluid port and raising multi-way valve (10)；The oil outlet of the check valve (11) and the G mouth company of raising multi-way valve (10)
It connects；The J mouth of the overflow valve (12) is connect with the C mouth of raising multi-way valve (10)；
Described raising multi-way valve (10) one end is connected with control stick (15)；
Governor valve (16) are connected between raising multi-way valve (10) and elevating ram I (17), elevating ram II (18)；The speed limit
The A mouth of valve (16) is connect with the D mouth of raising multi-way valve (10), the B mouth of governor valve (16) respectively with elevating ram I (17), lifting
The rodless cavity of oil cylinder II (18) connects.
3. the linkage interlocked control system of electri forklift according to claim 1, it is characterised in that: the alternating current generator driving
Device (21) is XCMG105；
Battery (1) is connected between the end BAT+ of AC motor drive (21), the end BAT-；
The end DI1 of AC motor drive (21) is connected with system run switch (2)；
The end DI2 of AC motor drive (21) is connected with raising multichannel threshold switch (3)；
The end DI3 of AC motor drive (21) is connected with inclination multichannel threshold switch (4)；
+ the 5V of AC motor drive (21), the end AI1 with GND connect the pressure sensor (5)；
+ the 5V of AC motor drive (21), the end AI2 with GND connect the current sensor I (6)；
+ the 5V of AC motor drive (21), the end AI3 with GND connect the current sensor II (7)；
The end RXD, TXD and GND of AC motor drive (21) is connected with display screen (8)；
US, VS of AC motor drive (21) connect the movable motor (19) with the end WS；
The end UM, VM and WM of AC motor drive (21) is connected with pump control motor (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429658.7A CN110065912A (en) | 2019-05-22 | 2019-05-22 | The linkage interlocked control system of electri forklift |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910429658.7A CN110065912A (en) | 2019-05-22 | 2019-05-22 | The linkage interlocked control system of electri forklift |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110065912A true CN110065912A (en) | 2019-07-30 |
Family
ID=67371311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910429658.7A Pending CN110065912A (en) | 2019-05-22 | 2019-05-22 | The linkage interlocked control system of electri forklift |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110065912A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951706A1 (en) * | 1999-10-27 | 2001-05-10 | Henry Tunger | Electrical energy resource for electric fork lift truck has hydraulic fluid used for driving current generator during lowering of lifting forks for energy recovery |
| CN101711221A (en) * | 2008-02-04 | 2010-05-19 | 浙江佳力科技股份有限公司 | Full hydraulic AC electrical forklift |
| JP2015163022A (en) * | 2014-02-28 | 2015-09-07 | 日立建機株式会社 | work vehicle |
| JP2016108761A (en) * | 2014-12-03 | 2016-06-20 | 日立建機株式会社 | Work machine |
| CN107673282A (en) * | 2017-10-13 | 2018-02-09 | 安徽全柴集团有限公司 | Control system of electric forklift based on switched reluctance machines driving |
| CN108298474A (en) * | 2017-12-26 | 2018-07-20 | 浙江大学 | A kind of fork truck energy saving system with speed-regulating function |
| CN209906300U (en) * | 2019-05-22 | 2020-01-07 | 徐州徐工特种工程机械有限公司 | Electric fork-lift linkage interlocking control system |
-
2019
- 2019-05-22 CN CN201910429658.7A patent/CN110065912A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19951706A1 (en) * | 1999-10-27 | 2001-05-10 | Henry Tunger | Electrical energy resource for electric fork lift truck has hydraulic fluid used for driving current generator during lowering of lifting forks for energy recovery |
| CN101711221A (en) * | 2008-02-04 | 2010-05-19 | 浙江佳力科技股份有限公司 | Full hydraulic AC electrical forklift |
| JP2015163022A (en) * | 2014-02-28 | 2015-09-07 | 日立建機株式会社 | work vehicle |
| JP2016108761A (en) * | 2014-12-03 | 2016-06-20 | 日立建機株式会社 | Work machine |
| CN107673282A (en) * | 2017-10-13 | 2018-02-09 | 安徽全柴集团有限公司 | Control system of electric forklift based on switched reluctance machines driving |
| CN108298474A (en) * | 2017-12-26 | 2018-07-20 | 浙江大学 | A kind of fork truck energy saving system with speed-regulating function |
| CN209906300U (en) * | 2019-05-22 | 2020-01-07 | 徐州徐工特种工程机械有限公司 | Electric fork-lift linkage interlocking control system |
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